St Iestyn's Church stands in a churchyard in a rural part of eastern Anglesey, near the village of
Llanddona. The date of foundation of the church is unknown. Geraint Jones, author of a 2006 guide to the churches of Anglesey, notes that it is thought that
St Iestyn, a nephew of the Anglesey saint
St Cybi, established a religious community in this place in the 7th century. It was the last of the churches that he established. It is known that there was a church here before 1254 as it is recorded in the
Norwich Valuation of that year. The oldest parts of the building, including the blocked west door, date back to the 12th century. There was an extension to the chancel, probably in the 14th century; the east window is 15th-century, and the south door dates from about 1500. The 16th century saw the addition of the south transept. Restoration work took place in 1865 (renewing the roof and adding the north window) and in 1954, when the west door was discovered. St Iestyn's is still in use for worship and belongs to the
Church in Wales. As of 2012, the
rector is the Reverend Neil Fairlamb. ==Architecture and fittings==