The story
- Irish · derived fromÓ Longáin“descendant of Longán”
- English todayLangan
Reduced Anglicized form of Irish Ó Longáin (“descendant of Longán”), a personal name derived from a diminutive of long (“tall”) or long (“ship”), thus a nickname for a seafarer.
Etymology from Wiktionary, CC BY-SA 4.0.