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 out across the county with the Bog of Allen extending into four other counties. The county consists of approximately 42,000 hectares of peatlands which is 21% of Offaly's total land area. Offaly contains approximately of forest and woodland area, which only amounts to 4.5% of the county's land area. This includes woodlands within the Slieve Blooms and the Lough Boora Parklands. Roughly 75% of Offaly's forested area is Conifer High Forest. The following are the historical baronies located in County Offaly: One of the earliest known settlements in County Offaly is at Boora bog which dates back to the Mesolithic