Isenburg-Isenburg
Isenburg-Isenburg was the name of a state of the Holy Roman Empire, based around Isenburg in modern Rhineland-Palatinate, Germany. It was created as a partition of the Niederlahngau in 1137. It partitioned into Lower Isenburg and Isenburg-Braunsberg in 1210.
Name | Reign |
| Rembold IV | 1137 - 1162 |
| Rembold V | 1152 - 1195 |
| Bruno I | 1152 - 1199 |