Diocese of Kilmore, Elphin and Ardagh Diocese of Kilmore, Elphin and Ardagh The United Dioceses of Kilmore, Elphin and Ardagh is a diocese of the Church of Ireland located in central Ireland. It is in the ecclesiastical province of Armagh. It is one of twelve Anglican dioceses in the island of Ireland. The geographical remit covers all of County Leitrim, almost all of counties Cavan, Longford and Roscommon, plus smaller parts of counties Westmeath, Sligo, Donegal and Fermanagh. There had been two other cathedrals, but are now in ruins. The historic sees of Kilmore and Ardagh were intermittently united in the 17th and 18th centuries until
County Offaly Mountain which are the county's second and third highest peaks. Croghan Hill rises from the Bog of Allen and is located in northern Offaly. Although only 234 metres high, it is known for its view over the surrounding area and it stands out by itself. The floodplain of the River Shannon is in the north-western part of the county. The River Camcor runs through the town of Birr and is a Wild Trout Conservation Area. The River Brosna runs across the county from Lough Owel in Westmeath to Shannon Harbour. Silver River runs through several towns in the south of