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Origins of the O'Neill surname

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About the O'Neills

We have a total number of 108798 records for people with the last name O'Neill.

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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'Neill family's history

Where do most O'Neills live?

In 1921, most O'Neills 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'Neills

How common is your surname?

715th most common surname in the UK

We have 41,800 records for the O'Neill surname. The oldest one dates back to 1814.

Who were O'Neills most likely to marry?



O Neills

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

What are the most common O'Neill first names?

  • John
  • James
  • Mary
  • Margaret

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

Common jobs for O'Neills

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'Neills in 1921


Domestic Servant




Cotton Weaver




Common Male occupations for O'Neills in 1921
General Labourer


Dock Labourer


Coal Miner






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

We found over 100,000 family trees with the O'Neill surname

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