Ó hEaráin
Ó hEARÁIN—I—O Harrane, O Haran, O Heron, O'Harran, O'Haran, O'Hern, Haran, Harran, Heran, Herran, Heron, Herron, Hearn, Herne; 'descendant of Earadhán' (diminutive of earadh, fear, dread); older Ó hEaradháin; the name of an Oriel family who were lords of Ui Breasail Macha, in the barony of Oneilland, Co. Armagh; still common in the north of Ireland.
Alphabetical Index to Irish Surnames