 The four provinces of Armagh, Cashel, Dublin and Tuam corresponded to the contemporary boundaries of the provinces of Ulster, Munster, Leinster and Connacht respectively.In most cases the dioceses corresponded with the territories controlled by the Irish clans, and the clan chiefs liked to appoint family members as bishops, nuns and church officials.The diocesan structure established by the synod largely survived until the sixteenth century, and still forms the basis of the territorial structure of both the Catholic Church and the Church of Ireland, with many of the sees now merged.