The story
- Irish · derived fromMac Giolla Dhomhnaigh“son of the lad of the Sunday”
- English todayMcEldowney
Anglicized form of Northern Irish Mac Giolla Dhomhnaigh (“son of the lad of the Sunday”), from giolla (“lad, boy”) and Domhnach (“Sunday”).
Etymology from Wiktionary, CC BY-SA 4.0.