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O'Neil Surname Origin

The descendants of Neil, that is, the powerful or mighty.

Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.

O'Neil  Surname Meaning and Family Facts

O'Neil Last Name Meaning
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A O'Neil Family History Thought:

Whenever there's a will, you'll see an heir loom.

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