https://en.wikipedia.org/wiki/Dean_of_Tuam#List_of_Deans_.28Church_of_Ireland.29
Tuam Cathedral of St Mary's
The Dean of Tuam is based at the Cathedral Church of St Mary in Tuam in the Diocese of Tuam within the united bishopric of Tuam, Killala and Achonry of the Church of Ireland.
https://en.wikipedia.org/wiki/St_Mary's_Cathedral,_Tuam
Wikipedia
St Mary's Cathedral is the cathedral church of the Diocese of Tuam, Killala and Achonry in the Church of Ireland. It is located in Tuam, County Galway in Ireland.