The church in Menai Bridge has the dedication of Saint Tysilio, who around 590-600 had a sanctuary called Ynys Suliau on the island. The current building was erected at the beginning of the 15th century. In the 19th century, its Victorian renovation was carried out.
The church is a small, simple building erected on a rectangular plan. The chancel is not separated from the nave. The entrance portal is on the north side and is framed with timber, probably part of the original porch. The windows were transformed in the 19th century, although the eastern openning copies, original, late medieval one. Inside, there is an eight-sided baptismal font from the 14th century. Also part of the roof truss is original and dates from the fifteenth century.
Website britishlistedbuildings.co.uk, Church of St. Tysilio A Grade II Listed Building in Menai Bridge, Isle of Anglesey.