Overlap with the Diocese of Ossory Osraige

the diocese of ossory (red) described @ synod of ráth breasail held on ossory s northern border in 1111 ad.

the diocese of ossory first established in fifth century mission of st. ciarán of saighir, borders of permanently set @ synod of ráth breasail om 1111 ad. roman catholic diocese of ossory still day provides close outline of kingdom s borders. in earliest times, chief church in osraige undoubtedly seir kieran (county offaly), chief church of st ciarán, @ time in history had been eclipsed aghaboe (county laois), chief church of saint cainnech, , later moved kilkenny, founded same saint. record of irish annals points freshford, county kilkenny being of importance, while archaeological evidence suggests kilkieran, killamery , kilree (all county kilkenny) , domnach mór roigni (now donaghmore, county laois) significant ecclesiastical sites. ossory region in ireland known have 2 patron saints; st. ciarán of saighir , st. cainnech of aghaboe. due largely scholarly work of canon william carrigan in researching , compiling 4 volume opus history , antiquities of diocese of ossory, history of kingdom , peoples 1 of complete of in ireland. furthermore, database of monasticon hibernicum project launched ailbhe mac shamhráin lists known historic monastic foundations associated diocese of osraige.