 St Edern 's Church , Bodedern ( sometimes referred to as St <unk> 's Church ) is a medieval parish church in the village of Bodedern , in Anglesey , north Wales . Although St Edern established a church in the area in the 6th century , the oldest parts of the present building date from the 14th century . Subsequent alterations include the addition of some windows in the 15th century , and a chancel , transept and porch in the 19th century , when the nave walls were largely rebuilt . Stained glass was also inserted into the windows of the chancel and transept . 
