Isenburg-Philippseich was a County of southern Hesse, Germany. It was created in 1711 as a partition of Isenburg-Offenbach, and was mediatised to Isenburg in 1806. Counts of Isenburg-Philippseich (1711–1806) Counties of the Holy Roman Empire House of Isenburg States and territories established in 1711 1711 establishments in the Holy Roman Empire