sentences:  The wife of this pre-eminent magnate—and mother of Eóin Mac Dubhghaill, his son and successor—was almost certainly a member of the Comyn kindred, a family closely bound to the Balliol family.During the short Balliol regime, Alasdair Mac Dubhghaill had been appointed Sheriff of Lorn, a position which made him the Scottish Crown's representative throughout much of the western seaboard, including Clann Domhnaill and Caimbéalaigh territories.If tradition preserved by the seventeenth-century "Ane Accompt of the Genealogie of the Campbells" is to be believed, Clann Dubhghaill overcame and slew Cailéan Mór in the 1290s.