East Marton is also known as Marton-in-Craven, and, together with West Marton, is called Marton (Pevsner; Leach and Pevsner), Martons Ambo (Borthwick Institute) or Martons Both (locally).
St Peter's is a small Dales church in a small Dales village between Skipton and Clitheroe. The village street descends steeply from the main road, the churchyard is on the hillside near the bottom. Between the church and the river (now made into part of the Leeds and Liverpool Canal) are the platforms marking the site of medieval buildings; these are shown on OS map of 1852 as ‘Old Hall’. The church has a broad early tower with small windows; in the S wall of the tower are two slit windows (ground and first floor) with what were probably one-piece window-heads but are split. In the W wall of the tower, the lower storey has a round-headed window-head, while the higher level has one made with two flat stones meeting at a point. The N wall has a window with a one-piece window-head. The low nave, N vestry and chancel are largely an 18thc rebuild with five reused chevron voussoirs in the exterior walls of the nave and chancel. Inside, the S arcade is Perp, and there is a plain cylindrical font. There is also a fragment of a carved pillar, originating from St Helen’s Well at Thorp Arch near Tadcaster (Whitaker (1812), 185); see the report under Thorp Arch for the find-spot.