He was a friend of the two bishops of Oldenburg in Holstein, Vicelinus (died 1154) and Gerold (died 1163), who did much to Christianize the Polabian Slavs.
Han var en ven af de to biskopper i Oldenburg in Holstein, Vicelin (døde 1154) og Gerold (døde 1163), som gjorde meget for at kristne de polabiske slaver.