St Dowlagh’s Church is located in Balgriffin in north county Dublin. It holds the record of being the oldest stone roofed church that is still in use today and the grounds also contain Ireland’s only standalone baptistry. This octagonal baptistry covers an underground spring which leads to an open air body of water called St Catherine’s Pond. The oldest part of the church dates from the 12th century however Christian activity here dates back even further to the time of St. Patrick. Very little is known of St Doulagh, but it is calculated that he lived in the early 7th century and lived as a hermit. In the 19th century there was some dispute over the existence of St Doulagh and if this church was built by Vikings. Recent research has however confirmed he did exist and that the methods of construction for the church were indigenous. There is also a lovely small granite stone cross at the entrance to the grounds. This was either transferred here from somewhere else or may have been given as a gift as it is made with non-local granite.