The story
- Irish · derived fromÓ hAllmhuráin“descendant of Allmhurán”
- English todayHalloran
Reduced Anglicized form of Irish Ó hAllmhuráin (“descendant of Allmhurán”), a personal name derived from a hypocoristic form of allmhurach (“foreigner”).
Etymology from Wiktionary, CC BY-SA 4.0.