St. Mochaemhog was a holy man from Leigh, in the modern parish of Two-Mile-Borris, Co. Tipperary. In the year 550 he travelled, with a group of his monks, to a place he described as ‘Enachtruim, which is in the Slieve Bloom, in the territory of the Leixians’. The site was close to where the Tonet and Delour rivers joined the Nore. At the time, the Nore represented the northern boundary of the Kingdom of Ossory and as the new settlement was on the north bank of the river it was always referred to as being in the territory of Leix.
Mochaemhog developed the site into a serene and peaceful community of prayer and reflection. One day, some years after his arrival in Anatrim, a man called Bronach came and told Mochaemhog not to ‘labour in vain, because this place will not be yours’. The man then tried to force Mochaemhog out of the monastery by force. Taken aback by the stranger’s audacity, Mochaemhog said that Bronach had an appropriate name (Brón being the Irish for sadness) as the chieftain of the area would expel him for what he had done. Mochaemhog also prophesised that he would stay in Anatrim until such time that a holy man called Coemhan (Kavan) would arrive there. Mochaemhog’s prophecy came through shortly afterwards when Kavan arrived to Anatrim out of the blue. Mochaemhog returned to Munster whilst Kavan lived in Anatrim for the rest of his life.
 Rev. William Carrigan, The History and Antiquities of the Diocese of Ossory, Vol. 2 (Dublin, 1905), pp 146-150 and Rev. John Canon O’Hanlon and Rev. Edward O’Leary, History of the Queen’s County, Vol. 1, (Kilkenny, 1981), p. 296.