St. Mary's is now part of the Cherwell Valley Benefice along with five other parishes: Ardley, Fritwell, Somerton, Souldern and Upper Heyford.
Heyford Mill lies a little to the west of the village along the River Nene in a valley which separates the village and Nether Heyford.
Isabella outlived all her children, so after her death in 1293 her inheritance was disputed between Warin de Lisle and Hugh de Courtenay, who later became 9th Earl of Devon.
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Women's only peace camps were based at Waddington, Lincs from April 1982- September 82 and Capenhurst October 1982-March 1983 Other, mixed-sex, peace camps sprang up at the military bases of Upper Heyford, Daws Hill in High Wycombe, RAF Molesworth, Lakenheath, Naphill and Faslane.