sentences:  Asser's predecessor as Bishop of Sherborne, Wulfsige, attested a charter in 892.Asser's first appearance in the position is in 900, when he appears as a witness to a charter; hence the succession can only be dated to the years 892 to 900.In any event, Asser had already been a bishop prior to his appointment to the see of Sherborne, since Wulfsige is known to have received a copy of Alfred's "Pastoral Care" in which Asser is described as a bishop.