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Isenburg-Grenzau

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Isenburg-Grenzau was the name of several states of the Holy Roman Empire, based around the Lordship of Grenzau, in modern Rhineland-Palatinate, Germany. The first state called Isenburg-Grenzau existed 1158 - 1290; the second 1341 - 1439; and the third 1502 - 1664.

Isenburg-Grenzau
Arms-Isenburg
1158 - 1290

Capital
Circle
Bench
Grenzau
none
none
Partitioned from I.-Limburg-Covern 1158
Partitioned 1220
Partitioned 1286
Extinct; to Isenburg-Cleberg 1290

Isenburg-Grenzau (1158 - 1290)Edit

In 1158, Count Gerlach I of Isenburg-Limburg-Covern died. His territories were divided between his heirs, Henry I of Isenburg-Grenzau and Gerlach II of Isenburg-Covern. In 1213 Henry began the construction of Castle Grenzau, located on a mountain spur along the Rhine trade route from Leipzig to Flanders. After Henry's death in 1220, his realm was divided into Isenburg-Grenzau (to Henry II) and Isenburg-Limburg (to Gerlach IV). In 1286 Henry partitioned his territories between his sons, into the states of Isenburg-Grenzau (to Eberhard I), Isenburg-Cleberg (to Louis) and Isenburg-Arnfels (to Gerlach). Eberhard died in 1290 without any heirs so Isenburg-Grenzau passed to his eldest surviving brother, Louis.

Name

Reign

Henry I1158 - 1220
Henry II1220 - 1287
Eberhard I1286 - 1290


Isenburg-Grenzau
Arms-Isenburg-Grenzau-pre1439
1341 - 1439

Capital
Circle
Bench
Grenzau
none
none
Partitioned from Isenburg-Cleberg 1341
Extinct; to Nassau-Beilstein 1439

Isenburg-Grenzau (1341 - 1439)Edit

Isenburg-Cleberg was partitioned in 1341 between the sons of Lothar; with Isenburg-Grenzau passing to Philip I. Philip came into conflict with the expansionist prince-Archbishop Baldwin of Luxembourg of Trier. In 1346 Baldwin expanded his power deep into the Westerwald, and the following year Philip allied with Count Reinhard I of Westerburg against him. It began the Grenzauer Feud which was only ended after the intervention of the Emperor. In 1361 Philip was forced to acknowledge the overlordship of the Archbishops shortly before his death. Philip's successors were hardly notable and died out in 1439. Their territories were inherited by Nassau-Beilstein, passed to the archbishops of Trier in 1446, and was finally purchased by the Counts of Lower Isenburg in 1460.

Name

Reign

Philip I1341 - 1361
Eberhard II1361 - 1399
Philip II1399 - 1439



Isenburg-Grenzau
Arms-Isenburg-Loweldsal Arms-Isenburg-Lowyousal
1502 - 1664

Capital
Circle
Bench
Grenzau
Electoral Rhenish
Counts of the Wetterau
Partitioned from Lower Isenburg 1502
Extinct; to Trier 1664

Isenburg-Grenzau (1502 - 1664)Edit

Lower Isenburg was partitioned in 1502, with Isenburg-Grenzau passing to Gerlach III. Gerlach's fame and respect, and by extension that of the House of Isenburg, had increased dramatically when he held the Emperor's banner at the Reichstag at Worms in 1495. Gerlach was succeeded by his son Henry the Elder in 1530. Two of Henry's sons, John and Salentin were sent into the church at a young age. John became the Archbishop of Trier in 1547, and Salentin the Archbishop of Cologne in 1567. Henry's other son Anthony succeeded him in 1552. Anthony died two years later and John succeeded him. John was succeeded by his son Arnold, and after Arnold died in 1577 Salentin left the church to take the countship.

Salentin in his capacity as Archbishop had greatly improved conditions in Grenzau. After Salentin's death in 1610, he was succeeded by his elder son Salentin VIII. Salentin died in 1619 and was succeeded by his younger brother Ernest. Ernest was a field captain of the Imperial army during the Thirty Years' War, fighting predominantly in the Netherlands with distinction. After his death in 1664 at age 80 and without heirs, Isenburg-Grenzau was seized permanently by the Archbishops of Trier.

Name

Reign

Notes
Gerlach III1502 - 1530
Henry the Elder1530 - 1552
Anthony1552 - 1554
John1554 - 1556Archbishop of Trier
Arnold1556 - 1577
Salentin VII1577 - 1610Archbishop of Cologne; Bishop of Paderborn
Salentin VIII1610 - 1619
Ernest1619 - 1664

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