St Doulagh's Church
St Doulagh's Church, known in Irish as Clochar Dúiligh, is Ireland’s oldest stone-roofed church still in use. It sits about 10 kilometres north of Dublin, near the village of Balgriffin in Fingal, in the old County Dublin. The site also has an octagonal baptistry built over a holy well—the only surviving standalone baptistry in Ireland—and a stone pool.
St Doulagh’s is part of the United Parishes of Malahide, Portmarnock and St Doulagh’s. The oldest part of the current building dates from the 12th century, and there is belief that Christian activity on the site goes back to the time of St Patrick.
Over the centuries the church grew and changed. In 1406, indulgences were granted to people who visited the church and confessed to the resident chaplain. After the English Reformation, the church came under the Church of Ireland. The Roman Catholic community nearby used other spaces, and regular services continued at the church only for a time. Since 1974, Roman Catholics in the area have been served by the parish of Holy Trinity in Donaghmede.
St Doulagh is named after a saint who is thought to have lived as a hermit in the 6th or 7th century. He lived in a small cell attached to the church. Much about his life is uncertain, and there are many legends about him.
To the north of the site there is a curved ditch, which suggests an early Christian settlement and graveyard. Excavations in 2015 did not disprove this idea and show that a circular ditch may have once surrounded the site.
The main historic church measures about 48 by 18 feet and has a double stone roof. Inside, there is a tomb believed to belong to St Doulagh, a small room called the Oratory at the eastern end, and a staircase to an upper floor. A modern church building was added in the 1860s.
Outside, in a field nearby, is St Doulagh’s Well—the octagonal baptistry over a spring—along with a sunken pool where people once gathered. In 1609 frescos were painted on the baptistry walls, showing St Patrick, St Doulagh and other saints; these were damaged later in the 17th century. A nearby pool, known as St Catherine’s Pond, is connected to the well by a hidden passage.
There is a graveyard around the church. Excavations uncovered a burial near the north wall, which may be the founder’s tomb.
St Doulagh’s Church stands as a rare link to medieval church life in Ireland, with its stone roof, early features, and the unique baptistry beside a holy well. The whole complex remains an important historical site that can still be seen today.
This page was last edited on 3 February 2026, at 14:55 (CET).