Dunton is a small village on a hill in the Vale of Aylesbury, in the Domesday hundred of Mursley, situated 6 miles N of Aylesbury in the heart of the county. The village consists of a few houses along a minor road in rolling mixed farmland. The church is in the village centre, with Dunton Manor, a timber-framed brick-faced house parts of which date from the 16thc, immediately to the N.
St Martin’s consists of nave, chancel and W tower. The chancel is 12thc in origin, but was rebuilt in the 13thc (see the plain pointed S lancet and similar low side windows on both sides). The triple lancet E window is a 19thc replacement. The chancel walls are rendered and painted yellow. The nave has a 12thc N doorway, now blocked, and the remains of a later medieval N window arch, but the S wall was rebuilt and the N windows replaced c.1790 with standard wide, round-headed brick windows. The N wall is of rubble painted yellow, and the NE angle of the nave has been rebuilt in brick. The S nave wall was rebuilt in large, roughly squared blocks, incorporating some Romanesque carved stones. It is not painted, and has a simple 18thc porch that is rendered and painted yellow. The plain 15thc tower is of large blocks like the S wall of the nave, with unusual thin clasping buttresses at the angles. It was given a brick parapet in the 18thc. Inside the nave has plain 18thc box pews and an 18thc W gallery. The chancel arch has 12thc responds but was given a new arch after 1300. The wall piscina in the S chancel wall is 12thc, as is the old font now relegated to the vestry under the W tower.