In 1111, the Synod of Rathbrassil decided that "St. Mary's church" would become the cathedral church of the Diocese of Limerick.
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The Bishop of Limerick, Ardfert and Aghadoe was the Ordinary of the Church of Ireland diocese of Limerick, Ardfert and Aghadoe, which was in the Province of Cashel until 1833, then afterwards in the Province of Dublin.
The first bishop, James Francis Corbett, was a priest of the Diocese of Limerick, Ireland, who was responsible for the Mission (later Parish) of St Kilda and Chancellor of the Archdiocese of Melbourne at the time of his appointment.