They (the Ui-Ercan) were at that time persecuted by the King of Leinster, Crimthann, son of Enna Ceinnselach, so that they went into exile. Of them are the manachs in Hy-Crimthann, and the manachs in Ulster, and Cenel-Enna in Munster. Of them is Fiacc, of whom we have spoken before. Fiacc, Aengus, Ailill Mar, Conall, and Etirscel were five brothers. Their father was the son of Ere.
Through the action of Patrick, the king granted him (Fiacc) land, the fifth part of his father's possessions, and thereon it was that he built Sleibhte.
The Aengus in question afterwards killed the king, Crimthann, son of Enna Ceinnselach, to avenge his exile. In thirties and forties are the churches which he gave to Patrick in the east of Leinster, and in Ui-Cennselaigh, including Domnach-mor of Magh-Criathar and Inis-Fail, where Mochonoc and Mochatoc are, and Erdit and Augustin in the smaller island (but their shrines are in Sleibhte, since the place was occupied by Gentiles); Domnach-mór of Magh-Reta. Patrick was a Sunday here (i.e., in Domnach-mór of Magh-Reta), and they were on that Sunday building Rath-Baccain, the royal fort of the district. Patrick sent to prevent this, but no notice was taken thereof. Patrick said, "Its building shall be troublesome, unless 'offering' is done there every day." He also said that the fort would not be inhabited until the wind (gaeth) would come from the lower part of hell. This was Gaithini, son of Cinaed, who rebuilt the fort in the time of Fedhlimidh, and of Conchobhar in Tara.
After that Patrick had founded churches and establishments in Leinster, moreover, he left a blessing upon Ui-Cennselaigh, and upon the Leinstermen a
