High and Low Ham were held by the Abbey of Glastonbury before and after the Conquest. They were assessed at 17 hides, of which 5 hides and 2½ virgates were in demesne in 1086. Of the remainder, Robert (de Obdurville) held 1 hide and 1 virgate from the abbot in 1086, Serlo (de Burcy) held 5 hides and Gerard (the Ditcher) 3 virgates. For the rest there were 22 villans and 21 bordars. In 1066 the land was held by three thegns: Leofric, Alweald and Almaer from the church of Glastonbury.
The manor was held by Glastonbury Abbey (who also held the advowson of the church) until the Dissolution. There was a church at High Ham in 1168 (Glastonbury Great Chartulary).