Isenberg

Isenberg was a County of medieval Germany. It was a partition of the county of Altena and was annexed to Limburg-Isenberg in 1242.

Counts of Isenberg (1191 - 1242)

• Eberhard II of Altena, count of Altena and Isenberg (1180 - 1209)
• Frederick II of Isenberg, count of Altena and Isenberg (1209 - 1226)
• Theodoric I, count of Altena and Limburg-Isenberg (1226 - 1242)