 The 15th-century clerestory, which runs continuously above the arcades in both nave and chancel, has seven windows on each side.The roof, also of the 15th century, is precisely like that of the chancel and rests on corbels carved with heads.The west tower stands at 130 feet to the top of the spire, the lower part of the walls probably dating back to the time of the earliest known church, - circa 1150, but the fine lower arch is 14th century.