 The east window of the chancel, west doorway of the nave and south doorway of the south aisle are also 14th century.In the 15th century a clerestory was added to the nave and a porch was added to the south door.The Lady Chapel was also rebuilt in the 15th century, and other late Mediæval additions include the Perpendicular Gothic windows of the south aisle and another Perpendicular Gothic window in the north aisle.