Ancaster is a village and civil parish in the South Kesteven district of Lincolnshire, England, on the site of a Roman town.

[citation needed] In the later years of Roman occupation, a large stone wall with accompanying ditches was erected around the town, possibly for defence against marauding Saxons.

The place name Ancaster is first attested in a 12th-century Danelaw charter from the reign of Henry II, and in a legal document of 1196, where it appears as Anecastre.

"[8] An excavation by the television programme Time Team in 2002 revealed a cist burial bearing an inscription to the god Viridius.

[16] There are also two nearby nature reserves, each a Site of Special Scientific Interest, where the tall thrift plant is found.

There is also a Green Man "mouth-puller" in the vestry and the remains of a Sheela na gig on the north side of the tower.

[citation needed] The ecclesiastical parish links to Wilsford as part of the Loveden Deanery of the Diocese of Lincoln.