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Parent’s name

O'Connor surname meaning

Descendant of Conchobhar, the Irish personal name behind Connor.

Confidence
High
US frequency
Rank 416 · 76,316 people
Common variants
O'Conor, O'Conner, Connor

The short story

O’Connor is the anglicized Irish patronymic meaning “descendant of Conchobhar,” the personal name represented in English by Connor or Conor. Older explanations translate Conchobhar in different ways, including “helping warrior” and wolf-related readings, so this page keeps the dependable family relationship as its meaning. O’Conor, O’Conner, and Connor are related spellings formed in different record systems. The apostrophe may disappear in US records, producing Oconnor. Irish records also show O Conor and O Connor without the mark. This catalog classifies O’Connor as a parent’s-name surname with high confidence.

Also seen as: O'Conor, O'Conner, Connor

Sources used
  • Library Ireland, 'O'Connor Family' (descendant of Conchobhar/Conor)
  • Wikipedia 'Connor (surname)' (Conchobhar and O'Connor forms)
  • Names2020_LastNames_RaceHispanic_Top1000.xlsx (2020 Census)