 The church is built from rubble masonry , dressed with <unk> . The nave measures 27 feet 6 inches by 15 feet 6 inches ( 8 @.@ 4 by 4 @.@ 7 m ) , the chancel is 15 feet 6 inches by 11 feet 9 inches ( 4 @.@ 7 by 3 @.@ 6 m ) , and the south chapel is 11 feet 3 inches by 16 feet ( 3 @.@ 4 by 4 @.@ 9 m ) . The building has a slate roof with <unk> of stone . At the west end , there is a <unk> bellcote with one bell ; crosses made of iron are fixed to the roofs of the chancel and south chapel . The nave of the church , which has two bays , was probably built in the 12th century . An entrance at the west end of the nave has been blocked up and plastered over on the outside . The chancel , which is smaller than the nave , and a chapel ( on the south side of the building attached to the nave ) were added in the 14th century , and the arches dividing the nave from the chapel and the chancel are of this date . The entrance door , from the 19th century , is positioned on the east side of the chapel and has a pointed <unk> . Alongside the doorway is a stone inscribed with the year 1637 , and next to that is a round @-@ headed small window dating from the 12th century , reset in the chapel wall of later date . It has been suggested that this window may been reused from the blocked nave entrance . 
