The rôle of the Irish in the diffusion of Christianity with its accompaniment of Latin culture will be noted hereafter, and a sketch of the unquestionably Irish saint Columbanus will be given in illustration. A few paragraphs on his almost namesake of Iona, whose career hardly extended beyond Celtic circles, may fitly close the present chapter on the Celtic genius. In him is seen the truculent Irishman and the clan-abbot of royal birth, violent, dominating by his impetuosity and the strident fervour of his voice; also the saint, devoted, loving, to his followers. Colum,[164] surnamed Cille, “of the church,” from his incessant devotions, and by his Latin name known as Columba, was born at Gartan, Donegal, in the extreme north-west of Ireland, about the year 520. His family was chief in that part of the country, and through both his parents he was descended from kings. He does not belong to those early Irish saints represented by Patrick and his storied coadjutors of both sexes, whose missionary activities were not constrained within any ascetic rule; but to the later generation who lived in those monastic communities which were so very typically Irish.[165] Columba appears to have passed his youth wandering from one monastery to another, and his manhood in founding them. But so strong a nature could not hold aloof from the wars of his clan, which belonged to the northern branch of the Hy-neill race, then maintaining its independence against the southern branch. The head of the latter was that very King Dermot (usually called Diarmaid or Diarmuid) against whom St. Ruadhan[166] and the clergy fasted and rang their bells. Columba appears to have had no part in the cursing of Tara. But Dermot was the king against whom the wars of his family were waged, and all the traditions point to the saint as their instigator. The account given by Keating, the seventeenth century historian of Gaelic Ireland, is curious.[167] “Diarmuid ... King of Ireland, made the Feast of Tara, and a nobleman was killed at that feast by Curran, son of Aodh; wherefore Diarmuid killed him in revenge for that, because he committed murder at the Feast of Tara, against the law and the sanctuary of the feast; and before Curran was put to death he fled to the protection of Colum-Cille, and notwithstanding the protection of Colum-Cille he was killed by Diarmuid. And from that it arose that Colum-Cille mustered the Clanna Neill of the North, because his own protection and the protection of the sons of Earc was violated. Whereupon the battle of Cul Dreimhne was gained over Diarmuid and over the Connaughtmen, so that they were defeated through the prayer of Colum-Cille.” Keating adds that another book relates another cause of this battle, to wit: