|1628 - 1806|
Offenbach after 1711
Counts of the Wetterau
|Partitioned from I.-Büdingen-Birstein||1628|
|Extinct; to Isenburg-Wied||1379|
Isenburg-Birstein was the name of a state of the Holy Roman Empire, based around Birstein in modern Hesse, Germany. Isenburg-Birstein was the only line of the House of Isenburg to remain Catholic; the others adopting Protestantism.
Isenburg-Birstein was created out of a partition of Isenburg-Büdingen-Birstein after the death of Count Wolfgand Enrest I in 1628. In 1711 Isenburg-Birstein received the territories of the County of Isenburg-Offenbach. In 1744 Isenburg-Birstein was raised to a principality by the Emperor, although the princes were still only represented in the Bench of the Counts of the Wetterau. Offenbach was made the capital of the principality.
The most famous member of Isenburg-Birstein was Prince Charles I (reigned 1803 - 1820). He distinguishing himself in the service of the Emperor during the Turkish Wars, and after the French Revolution and Napoleon I Bonaparte threatened the existence of his principality he entered into separate negotiations by which he founded the federative Sovereign Principality of Isenburg in 1806 and joined the Confederation of the Rhine, mediatising the other lines of the House of Isenburg. In 1814 after the Napoleonic Wars the Austrians occupied the principality. Despite the efforts of the Charles's wife, the principality was nevertheless mediatised to Hesse-Darmstadt by the Congress of Vienna.
|William Otto||1628 - 1635|
|Christian Maurice||1635 - 1664||with...|
|Wolfgang Ernest II||1635 - 1641||and...|
|John Louis||1641 - 1685||Count of Isenburg-Offenbach|
|William Maurice||1685 - 1711|
|Wolfgang Ernest I (III)||1711 - 1754||Prince from 1744|
|Wolfgang Ernest II (IV)||1754 - 1803|
|Charles I Frederick Louis Maurice||1803 - 1806||Prince of Isenburg from 1806|