The story
- Irish · derived fromÓ hEisleanáin“descendant of Eisleanán”
- Irish · derived fromÓ hEislin
- English todayHeslin
Reduced Anglicized form of Irish Ó hEislin, a reduced form of Irish Ó hEisleanáin (“descendant of Eisleanán”), a personal name which probably derives from éislinn (“unsafe, weak”).
Etymology from Wiktionary, CC BY-SA 4.0.