The church in Llangwyfan was built in the 12th century. Probably in the fourteenth century it was thoroughly rebuilt, and in the sixteenth century enlarged by the northern aisle. During its construction, the roof truss of the old nave was also replaced.
In the early modern period, the church in Llangwyfan witnessed Anglo-Welsh friction. In 1766, Bishop of Bangor appointed Thomas Bowles pastor of Trefdraeth, which also included the church of St. Cwyfan. Bowles did not know Welsh, and only five of the five hundred believers understood English. As a result, the local population protested against his appointment, leading to the consideration of the case at the court in 1773. The judge then ruled that Welsh-speaking priests should be sent primarily to Welsh-speaking parishes.
In the 19th century, the sea, after centuries of slow erosion around the coast, cut off the headland with the church and turned it into a small island of Cribinau. Access to the building was provided by a dike for the congregation, but in the 19th century the sea waves came close enough to the building, that the graves around the church were washed away. At that time, the church was already in ruin, the walls were devoid of a roof and it could not be used. In 1893, a local architect, Harold Hughes, collected money to save the temple, built a breakwater around the island, and rebuilt the church.
The church was erected at the end of the peninsula, between two bays. Originally, it was a very simple, rural building consisting of a 12th-century rectangular nave, without an externally separated chancel. In the fourteenth century it was extended, while in the fifteenth century the northern aisle was added with a separate entrance on the northern side, opened to the nave with three semicircular arcades. In the Gothic period, the church was equipped with new window openings: pointed, filled with a trefoil tracery in the eastern wall, and later one on the southern side, set in a stepped, four-sided recess, topped with a trefoil. A similar window also illuminated the northern aisle. The entrance to the nave was placed in the western part of the southern wall in a slightly pointed portal with a late Gothic three-sided framing.
Until modern times, the nave of the building has been preserved, while the late-medieval northern aisle was pulled down in the nineteenth century, and only traces of three arcades in the northern wall of the building testify to its existence. In the eastern wall, the 14th-century ogival window has been preserved, the others come from the 15th century, including the window in the northern wall, which was moved after the demolition of the aisle.
Salter M., The old parish churches of North Wales, Wolverhampton 1993.
Wooding J., Yates N., A Guide to the churches and chapels of Wales, Cardiff 2011.
Website anglesey-history.co.uk, Llangwyfan – St Cwyfan’s Church.
Website coflein.gov.uk, St Cwyfan’s church, Llangwyfan.