The 6th-century foundation
Finian, Nathy and Crumnathy
The annals record that the territory of Luigne was given to St Finian of Clonard by the local chief around AD 530, and Finian founded a monastery on the site and put his disciple St Nathy in charge. Nathy became the first bishop. Crumnathy — the form of the name that the Church of Ireland cathedral carried — is a later dedication. The historical layers are thick on the ground.
Cathedral in Ballaghaderreen, name in Sligo
A diocese without a town
The Diocese of Achonry was given its shape in the 12th century at the Synod of Kells and includes parts of three modern counties. The Catholic cathedral was built in Ballaghaderreen in north Roscommon in the 19th century, where the population could support it. The Church of Ireland cathedral at Achonry was deconsecrated in 1998 as part of a wider rationalisation. The name still anchors the diocese.