St Patrick's Cathedral, Dublin
Saint Patrick's Cathedral () in Dublin, Ireland, founded in 1191, is the National Cathedral of the Church of Ireland. With its spire, St. Patrick's is the tallest church (not Cathedral) in Ireland and the largest. Christ Church Cathedral, also a Church of Ireland cathedral in Dublin, is designated as the local Cathedral of the diocese of Dublin and Glendalough.
Diocese of Connor (Church of Ireland)
The rapid growth in the population of the Greater Belfast area as well as the rapid drop in the Protestant population of the Republic after Partition of Ireland in 1922 led to the bizarre situation where the United Dioceses of Down, Connor and Dromore, just one of fourteen Church of Ireland Dioceses had over half the Anglican population of the whole island. In 1944, therefore Connor Diocese was split off from the other two. St. Anne's Cathedral, Belfast built in 1905 to serve as a single cathedral for the Diocese, theoretically running alongside, but in practice replacing the existing cathedrals in Lisburn, Downpatrick and Dromore, saw two bishops of two distinct dioceses have stalls in the cathedral within forty years.