Etymology

Lenahan

L1E1N1A1H4A1N1

Today it means: A surname from Irish. Full definition →

Irish Ó Leanacháin
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The story

  1. Irish · derived fromÓ Leanacháin“descendant of Leanachán”
  2. English todayLenahan

Reduced Anglicized form of Irish Ó Leanacháin (“descendant of Leanachán”), probably derived from leann (“cloak”) and not from léanach (“sorrowful”).

Etymology from Wiktionary, CC BY-SA 4.0.