Diocese of Cloyne The Diocese of Cloyne The Diocese of CloyneThe Parish of Doneraile (highlighted in red) is one of 46 Parishes in the Diocese of Cloyne Bishop William CreanThe Most. Reverend Dr. William Crean is the Current Bishop of Cloyne. St. Colman's Cathedral CobhSt. Colman's Cathedral is the Mother Church of the Diocese of Cloyne.