Synod of Ráth Breasail

These disruptions, along with secular impositions by the invaders, produced a decline in Christian religious observance and the moral standards established by Saint Patrick and other early missionaries.

Ó Murchada (1999) argues in favour of a location near the townland of Clonbrassil about 4 miles southwest of Templemore, Co. Tipperary in the present-day parish of Drom & Inch.

[2] The synod was attended by no fewer than fifty bishops, three hundred priests and three thousand laymen, including King Murtough O'Brien.

[2] The synod's deliberations were prompted by the Gregorian Reform and guided by the relatively new powers of the Papacy as defined in Dictatus papae (1075–87) and Libertas ecclesiae (1079).

The synod also made the See of Waterford a suffragan of the Archbishop of Cashel having previously been a Danish city subject to Canterbury.