Etymology

McLewis

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

Irish Mac Lughaidh
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The story

  1. Irish · derived fromMac Lughaidh“son of Lughadh”
  2. English todayMcLewis

Americanized form of Irish Mac Lughaidh (“son of Lughadh”), a personal name derived from lugh (“brightness”). Compare Lewis.

Etymology from Wiktionary, CC BY-SA 4.0.