What is the oldest church in Ireland?
St. Audoen's Church, Dublin (Church of Ireland)
The old disused graveyard of St Audoen's has been converted into a recreation ground.  Many notables were buried there, including many Bishops and Lord Mayors of the city and the families of Ball, Bath, Blakeney, Browne, Cusack, Desminier, Fagan, Foster, Fyan, Gifford, Gilbert, Malone, Mapas, Molesworth, Penteny, Perceval, Quinn, Talbot and Ussher.[22] The Curate-assistant Christopher Teeling McCready (died 1913) collected detailed genealogies of some of these families in seven hand-written volumes, which are now in Marsh's Library.