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Oneill Family History

Oneill Genealogy & Family Tree

O'Neill is an Irish name from County Tyrone, Ireland, where the family were chiefs of the Clan Dalvy. It means "son of Niall," an Irish given name that means "champion." The earliest known ancestor--Donell O'Neill--was recorded in 1000. The family motto is Semper proesto patrice servire which means "I am ever ready to serve my country."

Other spellings include "Neal," "Neale," "Neales," "Neil," "Nihill," "Niell," "O'Nail," "O'Neil," and "O'Niel." Notable people with the surname include American actor Ed O'Neill (Married with Children, Modern Family, The Bone Collector), American actress Amy O'Neill (Honey, I Shrunk the Kids, Honey, I Blew Up the Kid, White Wolves: A Cry in the Wild II),  and American illustrator Rose O'Neill (creator of the Kewpie doll). The first O'Neill to come to America was Arthur O'Neill in Pennsylvania in 1840.

Oneill Birth Records
Oneill Death Records
  • Name Birth Date Death Date Location
  • John J ONeill -- --, 1860 May 5, 1860 New South Wales
  • Mary ONeill -- --, 1819 August 15, 1919
  • Mary ONeill -- --, 1515 December 0, 1590
  • EMPTYNUL EMPTYNUL ONeill     Emptynul
  • Kevin J Oneill -- --, 1959   Iowa
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