Etymology Explorer › English

Where does “O'Neill” come from?

O'Neill (English) comes from Irish Niall, from Old Irish Níall.

Ancestry of “O'Neill”, step by step

StepLanguageWordMeaning
1IrishNiall—
2Old IrishNíall—

Words derived from “O'Neill”

  • O'Neillian
  • O'Neillism
  • O'Neillite
Every word from Old Irish Níall →