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At the Synod of Rathbreasail in 1111, Tuam was named as the seat of a diocese corresponding roughly with the diocese of Elphin, whilst Cong was chosen as the seat of a diocese corresponding with the later archdiocese of Tuam in west Connacht.
He held a synod at Galway in 1523, attended by bishops of Kilmacduagh, Achonry Clonmacnoise, Kilfenora, Ross, in addition to representatives of the dioceses of Elphin, Killala and Armagh.
He was born either in the townland of Pallas, near Ballymahon, County Longford, Ireland, where his father was the Anglican curate of the parish of Forgney, or at the residence of his maternal grandparents, at the Smith Hill House in the diocese of Elphin, County Roscommon where his grandfather Oliver Jones was a clergyman and master of the Elphin diocesan school, and where Oliver studied.