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Origins of the O'Connor surname

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About the O'Connors

We have a total number of 145485 records for people with the last name O'Connor.

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I’ve managed to trace back to the mid-1500s! I can’t believe it! Utterly engrossing and I have uncovered some quite moving and heartbreaking stories attached to various ancestors. You don’t need any qualifications to start - just time patience, and some information.

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Delve deeper into the O'Connor family's history

Where do most O'Connors live?

In 1921, most O'Connors lived in London.

Census records trace your ancestors through each generation, so you can follow where your relatives lived through each decade.

Interesting facts about O'Connors

How common is your surname?

734th most common surname in the UK

We have 39,200 records for the O'Connor surname. The oldest one dates back to 1820.

Who were O'Connors most likely to marry?

O Connors



Our Marriage record sets tell us which families married O'Connors.

What are the most common O'Connor first names?

  • John
  • James
  • Mary
  • Margaret

Our birth record sets tell us the names of O'Connor family members

Common jobs for O'Connors

Men and women often performed different types of jobs, so these are displayed by gender to maintain their historical accuracy.

Common Female occupations for O'Connors in 1921






Domestic Servant


General Servant Domestic


Common Male occupations for O'Connors in 1921
General Labourer




Dock Labourer


Semiskilled Chauffeurs And Drivers




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Census records provide incredible detail on names, ages, marital statuses, occupations and more.

We found over 66,000 family trees with the O'Connor surname

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