Cirencester Abbey in Gloucestershire was founded as an Augustinian monastery in 1117 on the site of an earlier church, the oldest-known Saxon church in England, which had itself been built on the site of a Roman structure. The church was greatly enlarged in the 14th century with addition of an ambulatory to the east end. The abbot became mitred 1416. The monastery was suppressed in 1539 and presented to Roger Bassinge.