Land in Cumnor was given to Abingdon abbey by King Caedwalla, but was taken back into royal hands after it was sacked by the Danes. In 955 King Eadred gave it back to Abbot Aethelwold, a grant confirmed by King Edgar in 968. The Domesday Survey mentions a church in Cumnor, which was then an important holding of Abingdon Abbey assessed at 30 hides, with two mills, fisheries and land for 50 ploughs.