County of Isenburg

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Isenburg (pink, right) and Lower Isenburg (pink, left) around 1400

The County of Isenburg was a region of Germany located in southern present-day Hesse, located in territories north and south of Frankfurt. The states of Isenburg emerged from the Niederlahngau (located in the Rhineland-Palatinate), which partitioned in 1137 into Isenburg-Isenburg and Isenburg-Limburg-Covern. These countships were partitioned between themselves many times over the next 700 years.

House of Isenburg

Ruins of the Castle at Isenburg (Lower Isenburg)

The House of Isenburg was an old aristocratic family of medieval Germany, named after the castle of Isenburg in Rhineland-Palatinate. Occasionally referred to as the House of Rommersdorf before the 12th century, the house originated in the Hessian comitatus of the Niederlahngau in the 10th century. It partitioned into the lines of Isenburg-Isenburg and Isenburg-Limburg-Covern in 1137, before partitioning again into smaller units, but by 1500 only the lines of Isenburg-Büdingen (in Upper Isenburg) and Lower Isenburg remained. In 1664 the Lower Isenburg branch died out. The Büdingen line continued to partition, and by the beginning of the 19th century the lines of Isenburg-Büdingen, Isenburg-Birstein, Isenburg-Meerholz and Isenburg-Wächtersbach existed. Today still exist the (Roman Catholic) princes of Isenburg (at Birstein), the (Lutheran) princes of Ysenburg (at Büdingen and Ronneburg) and the (Lutheran) counts of Ysenburg-Philippseich.

"Family tree" of the Isenburg countships

Büdingen Castle
Castle Ronneburg, Hesse
Birstein Castle
Wächtersbach Castle
Meerholz Castle at Gelnhausen
Philippseich Castle at Dreieich

Isenburg, the original countship was divided upon the death of Count Rembold II in 1137 into:

Principality of Isenburg

It was not until 1806 that there was a state called simply "Isenburg". When the Holy Roman Empire was defeated by Napoleon I of France in that year, the empire was abolished and the Confederation of the Rhine was established amongst the various German states. As an incentive to join the Confederation, it was stated that any state which joined could mediatise their neighbours. Prince Charles of Isenburg-Birstein joined the Confederation and was granted the mediatized Isenburgian Countships of Isenburg-Büdingen, Isenburg-Meerholz, Isenburg-Philippseich, and Isenburg-Wächtersbach. His Principality was renamed to Isenburg.

The Principality continued under the rule of Prince Charles through the Napoleonic era, but was mediatised by Austria in December 1813, at the insistence of King Frederick William III of Prussia, who was angered that Isenburg had raised a regiment for French service by recruiting Prussian deserters and vagabonds.[1] Isenburg was one of only three original member princes of the Empire to be mediatized at the end of the Napoleonic era (the others being Leyen and prince-primate Dalberg, Prince of Aschaffenburg). This decision was confirmed at the Congress of Vienna. The lands of the principality were divided between the Grand Duchy of Hesse-Darmstadt and the Electorate of Hesse-Kassel (or Hesse-Cassel).

Rulers

House of Isenburg

Partitions of Isenburg under House of Isenburg rule

Armoiries d'Isembourg.svg
County of Isenburg
(1041-1137)
County of
Isenburg-Isenburg
(1137-1199)
CoA Isenburg-Kempenich.svg
County of
Isenburg-Kempenich
(1st creation)
(1137-1153) 		County of
Isenburg-Covern
(1137-1270)
      
             
File:Arms-Isenburg-Cleberg.png
County of
Isenburg-Cleeberg
(1167-1340)
Arms of the house of Isenburg-Wied.svg
County of
Isenburg-Braunsberg
(1199-1388)
Renamed as:
County of
Isenburg-Wied
(1388-1462)
CoA Isenburg-Kempenich.svg
County of
Isenburg-Kempenich
(2nd creation)
(1199-1424) 		      
      
CoA Lower-Isenburg.svg
County of
Lower Isenburg
(1218-1502) 		      
             
Blason Jean II d'Isenbourg Seigneur de Limbourg sur Lahn.svg
County of
Isenburg-Limburg
(1227-1406)
Inherited by the
House of Vianden
(1270-1306) 		      
       County of
Isenburg-
Grenzau
(1st creation)
(1278-1292) 		County of
Isenburg-Arnfels
(1278-1371)
      
      
County of
Isenburg-
Grenzau
(2nd creation)
(1340-1439)
Shield of the Principality of Isenburg.svg
County of Isenburg-Büdingen
(1st creation)
(1340-1511)
Part of the
County of
Isenburg-Braunsberg
(1371-1388)
Renamed as:
County of
Isenburg-Wied
(1388-1462)
To
Archbishopric
of Trier
To Lords of
Schöneck
(1424-1434),
Archbishopric
of Trier
(1434)
and Counts of
Virneburg
(from 1434)
To Nassau-Beilstein
(1439-1446)
and Archbishopric
of Trier
(1446-1460)
      
To County of Wied To County of Wied
County of
Isenburg-Neumagen
(1502-1554)
Arms-Isenburg-Lowyousal-after 1557.png
County of
Isenburg-
Grenzau
(3rd creation)
(1502-1664)
County of Isenburg-Ronneburg
(1511-1601) 		County of Isenburg-Birstein
(1st creation)
(1511-1664)
To County of Sayn-Homburg
      
County of Isenburg-Büdingen
(2nd creation)
(1628-1806)
(mediatized to Isenburg-Birstein in 1806) 		             
To Archbishopric of Trier, Archbishopric of Cologne and Abbots of Fulda County of Isenburg-Offenbach
(1628-1718)
       County of Isenburg-Marienborn
(1673-1725) 		      
Arms of Isenburg-Meerholz.svg
County of Isenburg-Meerholz
(1673-1806)
(mediatized to Isenburg-Birstein in 1806) 		             
County of Isenburg-Wachtersbach
(1673-1806)
(mediatized to Isenburg-Birstein in 1806) 		              County of Isenburg-Philippseich
(1711-1806)
(mediatized to Isenburg-Birstein in 1806)
County of Isenburg-Birstein
(2nd creation)
(1685-1744)
Raised to
Principality of Isenburg-Birstein
(1744-1806)
Shield of the Principality of Isenburg.svg
Principality of Isenburg
(Isenburg-Birstein line)
(1806-1815)
(mediatized to Hesse in 1815)

Table of rulers

Ruler Born Reign Death Ruling part Consort Notes
Gerlach I c.1060 1090-1115 c.1115[2] County of Isenburg Unknown
at least two children 		Brothers and founders of the family and the county.
Rembold I c.1060 c.1115[2] County of Isenburg Unmarried
Rembold II c.1090 1115-1137 1137 County of Isenburg Katharina of Arnstein
five children 		Sons of Gerlach I. Brothers and co-rulers.
Gerlach II c.1090 1115-1120 c.1120[2] County of Isenburg Unmarried
Gerlach III ? 1137-1158 1158 Isenburg-Covern Jutta of Are
three children 		Sons of Rembold II. In 1137, they divided the land between the three. Siegfried didn't have documented children, so his land may have returned to Isenburg. After the childless death of Rembold III, his nephew Rembold IV kept Isenburg-Isenburg.
Rembold III ? 1137-1162 1162 County of Isenburg
Isenburg-Isenburg		 Unmarried
Siegfried ? 1137-1153 1153 Isenburg-Kempenich Justina of Kempenich
no children
Rembold IV ? 1153-1175 1175[2] Isenburg-Kempenich Unknown
two children 		Son of Gerlach III. As a second son, he received the property of his childless uncles.
1162-1175 Isenburg-Isenburg
Gerlach I 1130 1158-1167 1167 Isenburg-Covern Unknown of Koffern
three children

Unknown of Leiningen
two children
Gerlach II 1149 1167-1217 1217 Isenburg-Covern Unknown of Covern
three children 		Sons of Gerlach I, divided the land between them.
Henry I c.1150 1167-1227 1227 Isenburg-Cleeberg Irmgard of Büdingen
(d.c.1220)
eight children
Rembold V ? 1175-1199 1220[2] Isenburg-Isenburg Hedwig of Kampenich
two children 		Sons of Rembold IV, inherited Isenburg-Isenburg, and divided it between them.
1199-1220 Isenburg-Kempenich
Bruno I ? 1175-1199 1210[2] Isenburg-Isenburg Theodora of Wied
(d.1218)
four children
1199-1210 Isenburg-Braunsberg
Bruno II 1176 1210-1255 1255[2] Isenburg-Braunsberg Johanna
two children
Gerlach III ? 1217-1235 15 April 1235 Isenburg-Covern Jutta
(d. July 1253)
two children 		Sons of Gerlach IV, ruled jointly.
Henry I ? 15 April 1235 Isenburg-Covern Unmarried
Salentin I ? 1218-1219 1219[2] Lower Isenburg Unknown
at least one child		 Portion probably granted by Rombald V to his eldest son, Salentin. He died in Crusade next year.
Theodoric I ? 1219-1251 1251[2] Lower Isenburg Uta of Blankenheim
(d.1252)
one child

Adelaide
(d.1258)two children 		Sons of Rombald V, ruled jointly. It's possible that Theodoric ruled in Lower Isenburg during a possible minority of Salentin's heir.
1220-1251 Isenburg-Kempenich
Rosemann ? 1220-1264 1264 Isenburg-Kempenich Kunigunda of Büdingen-Gelnhausen
(d.c.1250)
one child
Henry II c.1200 1227-1278 29 September 1278 Isenburg-Cleeberg Matilda of Hochstaden
(d.1264)
1246
eight children 		Sons of Henry I, divided the land between them.
Gerlach I c.1200 1227-1289 January 1289 Isenburg-Limburg Imagina of Bliescastel
(1233-1281)
five children
Henry II ? 1235-1270 c.1270[2] Isenburg-Covern Matilda
c.1235
no children		 After his childless death, the county is inherited by his brother-in law, Frederick of Vianden,[2] and the county stayed in his family until 1306, when it returned to the Cleberg line of the Isenburgs. From the House of Vianden, the counts in Covern were:
Covern absorbed within the House of Vianden patrimony (1270-1306), and then reabsorbed in Cleberg
Theodoric II the Younger ? 1251-1273 1273[2] Lower Isenburg Uta of Merenberg
(d.1263)
four children 		Son of Salentin I. Like his uncle, he may have been also involved in the government of both Lower Isenburg and Isenburg-Kempenich.
1264-1273 Isenburg-Kempenich
Bruno III ? 1255-1278 29 September 1278[2] Isenburg-Braunsberg Sophia of Runkel
(d. 26 March 1266)
one child

Isolda of Heinsberg
(d.c.1290)
c.1270
two children
Gerard I ? 1264/73-1287 1287 Isenburg-Kempenich Beatrice
(d.c.1275)
four children
Salentin II ? 1275-1297 1297 Lower Isenburg Agnes of Runkel
(d.1316)
ten children
Regency of Isolda of Loon-Heinsberg (c.1278-1284)
John I c.1270 1278-1327 1327 Isenburg-Braunsberg Agnes of Lower Isenburg
(d.1316)
1294
seven children
Louis Ludwig von Ysenburg-Helwig von Büdingen.jpg c.1250 1278-1304 1304 Isenburg-Cleeberg Heilwig of Tübingen
(d.c.1295)
seven children 		Sons of Henry II, divided the land between them. Eberhard left no heirs and his portion was inherited by his brother Louis.
Gerlach I c.1250 1278-1305 c.1305 Isenburg-Arnfels Elisabeth of Clèves
(1236-1290)
five children
Eberhard c.1250 1278-1292 25 November 1292 Isenburg-Grenzau Irmgard of Büdingen
(d.c.1220)
eight children
Isenburg-Grenzau annexed to Isenberg-Cleberg
Theodoric III ? 1287-1325 1323/25 Isenburg-Kempenich Kunigunde of Solms
(d.1344)
two children 		Sons of Gerard I, ruled jointly.
Simon I ? 1287-1320 c.1320 Isenburg-Kempenich Agnes of Trier
1293
two children
John I the Blind 11 Limburg (16).jpg 1266 1289-1312 19 September 1312 Isenburg-Limburg Elisabeth of Geroldseck-Veldenz
(1266-1285)
two children

Uda of Ravensberg
(1268-28 June 1313)
25 August 1292
five children
Salentin III ? 1297-1351 1351 Lower Isenburg Katharina
one child

Matilda of Covern
(d.1350)
six children
Lothar ? 1304-1341 4 February 1341 Isenburg-Cleeberg Isengard of Falkenstein
(d.c.1330)
five children
Theodoric ? 1305-1334 1334 Isenburg-Arnfels Hedwig of Neuenahr
(d.c.1330)
five children 		Sons of Gerlach I, ruled jointly.
John ? 1305-1348 17 November 1348 Isenburg-Arnfels Katharina
no children

Jutta of Arscheid
(d.c.1385)
no children
Gerlach II the Elder c.1295 1312-1355 14 April 1355 Isenburg-Limburg Agnes of Nassau-Siegen
(d.1318)
1312
three children

Kunigunde of Wertheim
(d.1362)
20 December 1323
eight children
Simon II ? 1325-1339 1337/39 Isenburg-Kempenich Katharina of Sayn
(d.c.1345)
one child 		Simon II and Theodoric IV, as sons of Theodoric III, ruled jointly with their cousin, Gerard II, son of Gerard I.
Theodoric IV the Arsonist ? 1329-1341 1341 Isenburg-Kempenich Unmarried
Gerard II ? 1329-1335 c.1335 Isenburg-Kempenich Unmarried
William I c.1310 1327-1383 17 July 1383[2] Isenburg-Braunsberg Agnes of Virneburg
(d.1352/3)
1329
(anulled 12 September 1351)
five children

Johanna of Jülich
(d.1362)
27 July 1354
one child

Lisa of Isenberg-Arenfels
(d. 30 November 1403)
11 November 1362
two children		 Grandson of John I.
Simon III ? 1341-1360 c.1360 Isenburg-Kempenich Hedwig of Schönberg
(d.1367)
six children
Henry I[3] 1320 1341-1379 1379 Isenburg-Büdingen Adelaide of Hanau
(d.29 July 1378)
29 July 1332
six children 		Sons of Lothar, divided the land between them.
Philip I c.1320 1341-1370 22 March 1370 Isenburg-Grenzau Margaret of Katzenelnbogen
(d.9 July 1370)
1338
two children
Gerlach II ? 1348-1371 14 August 1371 Isenburg-Arnfels Elisabeth of Braunshorn
(d.15 November 1339)
six children

Demut of Roesberg
(d.c.1365)
two children		 Son of Theodoric, had no surviving descendants. Arenfels went to Isenburg-Wied.
Isenburg-Arnfels annexed to Isenburg-Braunsberg/Wied
Salentin IV c.1320 1351-1364 1364 Lower Isenburg Katharina of Solms
(d.2 May 1399)
25 February 1341
two children
Gerlach III the Younger c.1325 1355-1366 April 1366 Isenburg-Limburg Elizabeth of Falkenstein
(d. 9 April 1366)
9 November 1356
no children		 Died of Black Death, without male heirs.
Salentin V c.1345 1364-1420 30 November 1420 Lower Isenburg Adelaide of Isenburg-Arenfels
(d.1401)
6 May 1371
ten children
John II c.1325 1366-1406 26 January 1406 Isenburg-Limburg Hildegard of Saarwerden
(d.1419)
two children		 Brother of Gerlach VI. Originally went into clergy. However, after his brother's death with no heirs, and with the permission of Pope Urban V, John put aside the office of Canon of Trier Cathedral and took over the rule of Limburg. He left no male heirs. The land went to the Archbishopric of Trier.
Isenburg-Limburg was annexed to the Archbishopric of Trier
Simon IV ? 1367-1414 1414 Isenburg-Kempenich Unmarried Sons of Simon III, ruled jointly. The death of the last one of them with no male descendants led to the annexation of the land to the Lords of Schöneck.
Theodoric V ? 1367-1378 1378 Isenburg-Kempenich Unmarried
John ? 1367-1424 1424 Isenburg-Kempenich Gertrude of Hückelhoven
(d.1421)
one child
Henry ? 1367-1388 1388 Isenburg-Kempenich Elisabeth of Schönkeen
no children
Kempenich annexed to the Lordship of Schöneck (1424-1434), the Archbishopric of Trier (1434) and then to the County of Virneburg
Eberhard 1356 1370-1399 1399 Isenburg-Grenzau Matilda of the Mark
(d.6 August 1406)
1371
five children
John I 1325 1379-1395 1395 Isenburg-Büdingen Sophia of Wertheim
(d.1389)
28 July 1355
two children
William II 1352 1383-1409 1409[2] Isenburg-Braunsberg Unmarried
John II 1360 1395-1408 1408 Isenburg-Büdingen Margaret of Katzenelnbogen
(1365-1438)
1385
two children
Philip II 1376 1399-1440 1440 Isenburg-Grenzau Margaret of Lower Isenburg
(d.15 June 1441)
17 January 1395
no children		 His childless death determined that the county went to the Counts of Nassau-Beilstein, then to the Archbishopric of Trier, and finally sold to the Counts of Lower Isenburg.
Annexed to the County of Nassau-Beilstein (1439), to the Archbishopric of Trier (1446) and the County of Lower Isenburg (1460)
Diether 1390 1408-1461 20 November 1461 Isenburg-Büdingen Elisabeth of Solms-Braunfels
(c.1410-17 July 1451)
26 July 1409
eight children
Gerlach c.1365 1409-1413 1413 Isenburg-Braunsberg Agnes of Isenburg-Büdingen
(d.4/9 July 1402)
27 September 1376[2]
four children		 Half-brother of William II.
William III c.1380 1413-1462 22 October 1462[2] Isenburg-Braunsberg Margaret of Moers
no children~

Philippa of Loon-Heinsberg
(d.14 January 1464)
10 April 1402
no children 		Sons of Gerlach, ruled jointly. After William's death, Dietrich IV, Lord of Runkel, could claim the county through the marriage with Anastasia, John II's daughter.
John II c.1380 1413-1454 1454 Isenburg-Braunsberg Agnes of Westerburg
(d.1415)
1400
two children

Kunigunde of Westerburg
(d. 2 February 1428)
1415
no children

Kunigunde of Saffenberg
(d.1454)
1428
no children
Wied annexed to Runkel's domains, and then returned to the County of Wied
Salentin VI c.1375 1420-1458 1458 Lower Isenburg Adelaide of Isenberg-Grenzau
no children

Maria of Isenberg-Grenzau
ten children		 Called sometimes of Grenzau, probably from his marriage.
Gerlach II ? 1458-1488 6 May 1488 Lower Isenburg Jutta of Eppenstein
(d.1421)
four children
Louis II 1422 1461-1511 4 June 1511 Isenburg-Büdingen Maria of Nassau-Wiesbaden-Idstein
(1438-10 January 1480)
1 December 1452
ten children
Gerlach III ? 1488-1502 18 July 1502 Lower Isenburg Hildegard von Zirk
(1430-1478)
seven children 		Sons of Gerlach II, ruled jointly.
James 1456 1488-1502 17 January 1505 Lower Isenburg Unmarried
Salentin VII 1470 1502-1534 24 September 1534 Isenburg-Neumagen Elisabeth of Hunolstein-Neumagen
(1475-4 June 1538)
nine children 		Sons of Gerlach II, ruled jointly. After Gerlach's death, his sons divided the county.
Gerlach IV 1490 1502-1530 9 September 1530 Isenburg-Grenzau Anastasia of Moers
(d.24 October 1557)
5 July 1494
eleven children
Philip I 20 March 1467 1511-1526 22 February 1526 Isenburg-Ronneburg Amalia of Rieneck
(29 November 1478-1543)
17 June 1516
Arnstadt
six children 		Sons of Louis II, divided the county between them.
John III 1476 1511-1533 18 May 1533 Isenburg-Birstein Anna of Schwarzburg-Blankenburg
(23 February 1497-1546)
17 June 1516
Arnstadt
seven children
Anton I Abel, Anton von Ysenburg@Weimar Schlossmuseum.JPG 2 August 1501 1526-1560 25 October 1560 Isenburg-Ronneburg Elisabeth of Wied
(1508-24 July 1542)
17 June 1516
sixteen children

Katharina Gumpel
(1530-18 September 1559)
16 February 1554
four children
Henry the Elder 5 January 1521 1530-1553 1553 Isenburg-Grenzau Margaret of Wertheim
(d.25 March 1538)
2 September 1533
five children
Reinhard CHRONIK EISENBERGER 42.jpg 1518 1533-1568 28 February 1568 Isenburg-Birstein Elisabeth of Waldeck-Wildungen
(10 December 1525-30 March 1543)
1542
one child

Margaret of Mansfeld
(1520-1573)
4 May 1551
Rudolstadt
no children 		Sons of John III, ruled jointly.
Philip II 23 May 1526 1533-1596 5 April 1596 Isenburg-Birstein Irmengard of Solma-Braunfels
(1536-1 October 1577)
31 October 1559
Birstein
ten children
Louis III 30 May 1529 1533-1588 7 February 1588 Isenburg-Birstein Anna Sybilla of Schwarzburg
(25 October 1540-3 August 1578)
24 June 1571
Arnstadt
four children

Maria of Hohnstein
(1558-2 February 1586)
13 August 1581
Offenbach
two children
Henry c.1500 1534-1554 13 February 1554 Isenburg-Neumagen Antonia Penelope van Brederode
(d.30 June 1591)
4 September 1547
ten children 		Sons of Salentin VII, ruled jointly. After their childless deaths, the county is inherited by his brother-in law, the count of Sayn.
Salentin VIII c.1500 1534-1554 1544 Isenburg-Neumagen Unmarried
Neumagen annexed to the County of Sayn
John Henry 1534 1553-1565 15 November 1565 Isenburg-Grenzau Erica of Manderscheid-Schleiden
(d.23 December 1587)
22 August 1563
Grenzau
no children
George 10 September 1528 1560-1577 29 June 1577 Isenburg-Ronneburg
(from 1566 in Ronneburg)		 Barbara of Wertheim
(1531-17 September 1600)
21 May 1552
no children 		Sons of Anton, ruled jointly. After Henry's death in 1601, Ronneburg was annexed back to Birstein.
Wolfgang 12 June 1533 1560-1597 20 December 1597 Isenburg-Ronneburg
(from 1566 in Kelsterbach)		 Johanna of Hanau-Lichtenstein
(4 April 1543-3 December 1599)
26 October 1563
(annulled 1573)
one child

Ursula of Solms-Braunfels
(1535-21 January 1585)
16 December 1577
no children

Ursula of Gleichen-Remda
(d. September 1625)
19 September 1585
no children
Henry 13 September 1537 1561-1601 31 May 1601 Isenburg-Ronneburg
(1566-1597 in Ronneburg; in all county from 1597)		 Maria of Rappoltstein
(5 July 1551-15 October 1571)
1569
no children

Elisabeth of Gleichen-Tona
(1554-19 July 1616)
1572
no children
Isenburg-Ronneburg was annexed to Isenburg-Birstein
Salentin IX Prince Salentin v Isenburg Grenzau.png 1532 1565-1610 19 March 1610 Isenburg-Grenzau Antonia Wilhelmina of Arenberg
(1 March 1557 - 26 February 1626)
10 December 1577
two children
Wolfgang Ernest I Graf Wolfgang-Ernst.jpg 29 December 1560 1596-1633 21 May 1633 Isenburg-Birstein Anna of Gleichen-Remda
(1565-3 March 1598)
26 September 1585
Birstein
eight children

Elisabeth of Nassau-Dillenburg
(24 January 1564-5 May 1611)
16 April 1603
Frankfurt am Main
one child

Juliana of Sayn-Wittgenstein
(26 February 1583-8 February 1627)
19 April 1616
four children		 Son of Philip II.
Salentin X c.1580 1610-1619 5 December 1619 Isenburg-Grenzau Unmarried Died childless.
Ernest Isenburg und Grenzau, Ernst Graf von.jpg 1584 1619-1664 30 May 1664 Isenburg-Grenzau Caroline Ernestine of Arenberg
(6 September 1606 - 12 September 1630)
1 September 1625
no children

Maria Anna of Hohenzollern-Hechingen
(1614 - 7 March 1670)
1636
Fürstenberg
one child		 Brother of Salentin X. Left no descendants.
Grenzau divided between the Archbishopric of Trier, Archbishopric of Cologne and Abbots of Fulda
William Otto 6 November 1597 1633-1667 17 July 1667 Isenburg-Birstein Catharina Elisabeth of Hanau-Munzenberg
(1 September 1607 - 24 September 1647)
7 November 1628
no children

Anna Amalia of Nassau-Dillenburg
(19 July 1599-4 May 1667)
24 October 1648
Birstein
no children 		Sons of Wolfgang Ernest I, divided the land between them. William Otto didn't have descendants and his feud was briefly annexed to Offenbach, before it generates a new branch in 1685.
Council of Regency, in Büdingen only (1633-1643)
John Ernest I Johann Ernst I. zu Isenburg Büdingen neu.jpg 21 June 1625 1633-1673 8 October 1673 Isenburg-Büdingen Maria Charlotte of Erbach-Erbach
(24 March 1631-8 June 1693)
15 June 1650
Wechsterbach
twelve children
Wolfgang Henry 21 October 1588 1633-1638 27 February 1638 Isenburg-Offenbach Maria Magdalene of Nassau-Wiesbaden-Idstein
(11 August 1592-13 January 1654)
12 September 1609
Büdingen
thirteen children
Isenburg-Birstein annexed to Isenburg-Offenbach
Regency of Maria Magdalene of Nassau-Wiesbaden-Idstein (1638-1640)
John Louis 14 February 1622 1638-1685 23 February 1685 Isenburg-Offenbach Maria Juliana of Hanau-Munzenberg
(15 January 1617-28 October 1643)
7 October 1643
Hanau
no children

Louise of Nassau-Dillenburg
(22 May 1623-17 November 1685)
10 February 1646
Dillenburg
eleven children

Maria Juliana Blingen
(d.1677)
27 January 1666
Hanau
(morganatic)
six children
Regency of Maria Charlotte of Erbach-Erbach (1673-1691) Sons of John Ernest I, ruled under their mother during their minority, and then divided the land once more.
John Casimir Büdingen Marienkirche 133.JPG 10 July 1660 1673-1693 23 September 1693 Isenburg-Büdingen Sophie Elisabeth of Isenburg-Offenbach
(10 July 1650-3 September 1692)
12 April c.1680
Offenbach am Main
eight children
Ferdinand Maximilian I 3 January 1662 1673-1703 14 March 1703 Isenburg-Wachtersbach Albertine Maria of Sayn-Wittgenstein-Berleburg
(29 January 1663-29 November 1711)
1 July 1685
Berleburg
fourteen children
George Albert 1720 Georg Albrecht Ysenburg-Meerholz.png 1 May 1664 1673-1724 11 February 1724 Isenburg-Meerholz Amalia Henriette of Sayn-Wittgenstein-Berleburg
(9 September 1663-21 April 1707)
11 July 1691
Meerholz
six children
Charles Augustus 27 January 1667 1673-1725 16 March 1725 Isenburg-Marienborn Anna Belgica Florentina of Solms-Laubach
(9 September 1663-21 April 1707)
5 May 1690
Laubach
four children
Isenburg-Marienborn was annexed to Isenburg-Wachtersbach
John Philip Landgraf Johann Isenburg.JPG 3 December 1655 1685-1718 21 September 1718 Isenburg-Offenbach Charlotte Amalia of Palatinate-Zweibrücken-Landsberg
(24 May 1653-9 August 1707)19 July 1678
no children

Frederica Wilhelmina Charlotte of Sayn-Wittgenstein-Berleburg
(23 June 1684-26 June 1731)
22 July 1708
one child 		Sons of John Louis, redivided the land between them.
William Maurice I 3 August 1657 1685-1711 8 March 1711 Isenburg-Birstein Anna Amalia of Isenburg-Büdingen
(23 October 1653-12 March 1700)
3 November 1679
Birstein
sixteen children

Anna Ernestina Sofia von Kvernheim
(1660-30 September 1708)
1700
no children

Wilhelmina Elizabeth of Leiningen-Dagsburg-Falkenburg
(13 April 1659-15 September 1733)
1709
Niederweisel
no children
Council of Regency (1693-1701) Died childless.
John Ernest II 3 April 1683 1693-1708 31 May 1708 Isenburg-Büdingen Unmarried
Regency of Albertine Maria of Sayn-Wittgenstein-Berleburg (1703-1710)
Ferdinand Maximilian II 12 January 1692 1703-1755 22 April 1755 Isenburg-Wachtersbach Albertine Ernestine of Isenburg-Büdingen
(25 August 1692-11 June 1724)
28 May 1713
Büdingen
nine children

Ernestine Wilhelmine of Stolberg-Gedern
(2 January 1695-7 May 1759)
7 December 1725
Wechtersbach
eight children
Ernest Casimir I Ernst Casimir Graf zu Ysenburg.jpg 12 May 1687 1708-1749 15 October 1749 Isenburg-Büdingen Christine Eleonore of Stolberg-Gedern
(12 September 1692-30 January 1745)
8 August 1708
Gedern
eight children		 Brother of John Ernest II.
Wolfgang Ernest I Graf Wolfgang Ernst von Isenburg (1686-1754).jpg 5 April 1666 1711-1754 15 April 1754 Isenburg-Birstein Friederike Elisabeth of Leiningen-Dagsburg-Hartenburg
(16 January 1681-11 January 1717)
27 November 1707
Weilburg
seven children

Elisabeth Charlotte of Isenburg-Marienborn
(7 November 1695-23 September 1723)
27 January 1719
Marienborn
two children

Charlotte Amalia of Isenburg-Meerholz
(1 September 1692-10 January 1752)
22 May 1725
six children 		Sons of William Maurice I, divided the land between them.
William Maurice II 23 July 1688 1711-1772 7 March 1772 Isenburg-Philippseich Amalia Louisa von Donna-Lauk-Reichertswalde
(27 February 1763-20 April 1800)
3 January 1712
Birstein
three children

Philippine Louise of Stolberg-Gedern
(2 October 1705-1 November 1744)
2 April 1725
Gedern
twelve children
Charles 27 November 1700 1724-1774 14 March 1774 Isenburg-Meerholz Elisabeth Friederike Juliana of Solms-Rodelheim-Assenheim
(23 September 1703-1 June 1762)
11 July 1691
Meerholz
twelve children
Gustav Frederick 7 August 1715 1749-1768 12 February 17 Isenburg-Büdingen Dorothea Benedikta von Reventlow
(13 October 1734-20 December 1766)
21 November 1749
Fünen
six children

Auguste Friederike of Stolberg-Wernigerode
(4 September 1743-9 January 1783)
5 December 1767
Wernigerode
eight children		 Left no surviving heirs.
Wolfgang Ernest II Fürst Wolfgang Ernst II von Isenburg und Büdingen.jpg 17 November 1735 1754-1803 3 February 1803 Isenburg-Birstein Sophie Charlotte Ernestina of Anhalt-Bernburg-Schaumburg-Hoym
(3 April 1743-5 December 1781)
20 September 1760
Schaumburg Castle
seven children

Ernestine Esperance Victoria of Reuss-Greiz
(20 January 1756-2 December 1819)
20 August 1783
no children		 Grandson of Wolfgang Ernest I. His father was Wiliam Emich Christoph, son of Wolfgang Ernest I.
Ferdinand Casimir I 19 January 1716 1755-1778 16 September 1778 Isenburg-Wachtersbach Auguste Karoline of Isenburg-Büdingen
(15 July 1722-30 November 1758)
7 July 1750
Büdingen
two children
Louis Casimir Büdingen Marienkirche134.JPG 25 August 1710 1768-1775 15 December 1775 Isenburg-Büdingen Auguste Friederike of Stolberg-Wernigerode
(4 September 1743-9 January 1783)
24 September 1768
Christinenhof
eight children		 Brother of Gustav Frederick, married his widow, but died also childless.
Christian Charles 28 June 1732 1772-1779 26 March 1779 Isenburg-Philippseich Constance Sophie of Sayn-Wittgenstein-Berleburg
(11 April 1733-8 January 1776)
13 June 1762
Philippseich
seven children
John Frederick William 2 May 1729 1774-1802 4 May 1802 Isenburg-Meerholz Karoline of Salm
(20 April 1734-11 May 1791)
11 June 1762
Grumbach
eight children
Ernest Casimir II 25 February 1757 1775-1801 25 February 1801 Isenburg-Büdingen Eleonore of Bentheim-Steinfurt
(26 April 1754-18 February 1827)
25 July 1779
Burgsteinfurt
eight children
Ferdinand Casimir II 17 October 1752 1778-1780 1 December 1780 Isenburg-Wachtersbach Auguste Louise Clementine Hedwig of Bentheim-Steinfurt
(23 September 1755-15 November 1798)
29 April 1755
Siegen
no children		 Left no heirs. The county passed to his uncle.
Council of Regency (1779-1781) Left no heirs.
Charles William Ernest 20 October 1767 1779-1781 30 January 1781 Isenburg-Philippseich Unmarried
Albert Augustus 14 April 1717 1780-1782 25 November 1782 Isenburg-Wachtersbach Sophia Dorothea Wilhelmina van Rehren
(15 June 1706-23 October 1758)
22 April 1756
Almelo
no children

Charlotte of Hesse-Philippsthal-Barchfeld
(26 April 1725-9 January 1798)
9 June 1765
Meiningen
no children		 Brother of Ferdinand Casimir I. Like him, he didn't have children.
Council of Regency (1781-1788) Brother of Charles William Ernest. In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Henry Ferdinand Heinrich Ferdinand Graf zu Isenburg-Philippseich.jpg 15 October 1770 1781-1806 27 December 1838 Isenburg-Philippseich Amalia Isabella Sidonia von Bentheim-Tecklenburg
(6 December 1768-6 August 1822)
13 July 1789
Lemgo
nine children
Isenburg-Philippseich absorbed into Isenburg-Birstein
William Reinhard 5 May 1719 1782-1785 5 August 1785 Isenburg-Wachtersbach Auguste Louise Clementine Hedwig of Bentheim-Steinfurt
(23 September 1755-15 November 1798)
20 February 1784
Wachtersbach
no children		 Brother of Ferdinand Casimir I and Albert Augustus. Married his sister-in-law, but didn't have heirs.
Adolph I 20 August 1722 1785-1798 19 April 1798 Isenburg-Wachtersbach Unmarried Brother of Ferdinand Casimir, Albert Augustus and William Reinhard. He also didn't have heirs.
Louis Maximilian I 28 August 1741 1798-1805 23 June 1805 Isenburg-Wachtersbach Auguste of Sayn-Wittgenstein-Hohenstein
(27 February 1763-20 April 1800)
26 April 1789
Wittgenstein
four children		 Last son of Ferdinand Maximilian II.
Ernest Casimir III Ernst Casimir I. von Ysenburg und Büdingen.jpg 20 January 1781 1801-1806 1 December 1852 Isenburg-Büdingen Ferdinande of Erbach-Schönberg
(23 July 1784-24 September 1848)
10 May 1804
Zwingenberg
eight children		 In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Isenburg-Büdingen absorbed into Isenburg-Birstein
Charles William Louis 7 May 1763 1802-1806 17 April 1832 Isenburg-Meerholz Karoline of Sayn-Wittgenstein-Hohenstein
(13 September 1764-28 April 1833)
29 March 1785
Wittgenstein
six children		 In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Isenburg-Meerholz absorbed into Isenburg-Birstein
Regency of Charles, Count of Isenburg-Birstein (1805-1806) In 1806, by German mediatisation, all Isenburg lands were absorbed into Isenburg-Birstein.
Louis Maximilian II 21 May 1791 1805-1806 25 February 1821 Isenburg-Wachtersbach Unmarried
Isenburg-Wachtersbach absorbed into Isenburg-Birstein
Charles Abb. Carl zu Isenburg.png 29 June 1766 1803-1806 21 March 1820 Isenburg-Birstein Charlotte Auguste of Erbach-Erbach
16 September 1795
Erbach
six children 		In 1806, in the advent of the German mediatization, his county was chosen as the one to which all the others were absorbed to. He was then raised as Prince of Isenburg. However, in 1815, his own Principality was also absorbed, this time to the Electorate of Hesse.
1806-1815 Principality of Isenburg
Isenburg was annexed to the Electorate of Hesse

Lines of succession

Mediatized line of Birstein (1815)

[citation needed]
  • Charles, 1st Prince 1803-1820 (1766-1820)
    • Wolfgang Ernst, 2nd Prince 1820-1866 (1798-1866)
    • Prince Victor (1802-1843)
      • Karl, 3rd Prince 1866-1899 (1838-1899)
        • Prince Leopold (1866-1933) -renounced his rights in 1898
        • Franz Joseph, 4th Prince 1899-1939 (1869-1939)
          • Franz Ferdinand, 5th Prince 1939-1956 (1901-1956)
            • Franz Alexander, 6th Prince 1956–2018 (1943-2018)
              • Alexander, 7th Prince 2018–present (1969) ∞ Sarah Lorenz
                • Princess Alix (2015)
                • Princess Zita (2017)
                • Franz Salvator, Hereditary Prince (2019)
              • Princess Katharina (1971) ∞ Archduke Martin of Austria
              • Princess Isabelle (1973) ∞ Carl, Prince of Wied
              • Princess Sophie (1978) ∞ Georg Friedrich, Prince of Prussia
              • Prince Viktor (1979) ∞ Jungeun Anes Lee
                • Princess Amalia (2016)
                • Princess Victoria (2018)

Mediatized line of Büdingen (1806)

  • Ernest Casimir III (1806-1848), in 1840 he was raised to Prince.
  • Ernest Casimir IV (1848-1861)
  • Bruno (1861-1906)
  • Wolfgang (1906-1920)
  • Alfred (1920-1922)
  • Karl (1922-1941)
  • Otto Friedrich (1904-1990), from the Ysenburg-Büdingen-Wächtersbach branch, adopted by Karl in 1936
  • Wolfgang-Ernst, 8th Prince 1990- (b.1936) ∞ Leonille Princess of Sayn-Wittgenstein-Berleburg
    • Hereditary Prince Casimir-Alexander (b.1967)
      • Prince Tristan Alexander (b.2014)
    • Prince Maximilian (b.1969)
      • Prince Tassilo-Alexander (b.2006)

Notable members of the family

References

  1. ^ Treitschke, Heinrich. History of Germany in the Nineteenth Century, Vol. I, page 609.
  2. ^ a b c d e f g h i j k l m n o p q Cawley 2006.
  3. ^ Sometimes numbered II in reference to his uncle, Henry, who died in 1298, even before his father's ascension.

External links

  • Official Website – Fürstenhaus Isenburg (Princely House of Isenburg) (in German)

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