The surname O'Connor is of Irish origin, derived from the Gaelic Ó Conchobhair, meaning "descendant of Conchobhar." The name Conchobhar itself comes from the Old Irish name Conchobar, which means "lover of hounds." The O'Connors were a prominent Gaelic Irish clan that held power in various regions of Ireland, particularly in County Kerry and County Roscommon.
Based on Census data, Oconnor ranks #417 among U.S. last names, with an estimated 77923 individuals — approximately 26 per 100,000 people.
Our database contains over 22075 people with the last name Oconnor. This surname is most commonly found in California, Florida, New York. We have over 19 unique first names combined with the last name Oconnor in our records. The most frequent first names associated with this surname are Michael, John, Thomas.
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