St Mary's is a spacious church with a four-bay aisled and clerestoreyed nave, probably 14thc., and a broad aisleless chancel, also 14thc., with a N vestry. The W tower is Decorated too, and of three storeys. The nave doorways are both under porches. Construction is of ashlar. The only Romanesque feature is the Sussex marble font.

Everdon was held by William from the Bishop of Bayeux in 1086. No church was recorded.

Benefice of Weedon Bec with Everdon and Dodford.

Pevsner describes the font as Purbeck and 13thc. The date might well be correct, but it follows a 12thc. form, commonest in Sussex but extremely widespread, and is likely to have been imported to Northants.