Enrique I el Pajarero
The settlement arose in the Eastphalian "Salzgau" region of the medieval Duchy of Saxony; the Immedinger relatives of duchess consort Matilda, wife of Henry the Fowler, founded a nunnery here as a proprietary monastery about 940. The convent was re-established as a Benedictine friary subordinate to the Bishopric of Hildesheim in 1152.