The Bishop of Ardagh was a separate episcopal title which took its name after the village of Ardagh, County Longford in Ireland. It was used by the Roman Catholic Church until 1756, and intermittently by the Church of Ireland until 1839.
The church of Saint Mel
Church of St Mel, view across the graveyard. June 2013
List of the Bishops of Ardagh in St Mel's Cathedral. This list gives the Catholic succession and includes Saint Mél, Melchu, Erhard of Regensburg, several abbots attested in medieval annals, and the Penal-era Vicars Apostolic.
The Archbishop of Armagh is an archiepiscopal title which takes its name from the city of Armagh in Northern Ireland. Since the Reformation, there have been parallel apostolic successions to the title: one in the Roman Catholic Church and the other in the Church of Ireland. The archbishop of each denomination also holds the title of Primate of All Ireland.
St Patrick's Church of Ireland Cathedral, Armagh, the episcopal seat of the pre-Reformation and Church of Ireland archbishops.
St Patrick's Roman Catholic Cathedral, Armagh, the episcopal seat of the post-Reformation Catholic archbishops.