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Origins of the Oneill surname

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About the Oneills

We have a total number of 106016 records for people with the last name Oneill.

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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 Oneill family's history

Where do most Oneills live?

In 1921, most Oneills 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 Oneills

How common is your surname?

You have a rare surname! It's not in the top 1000 UK surnames!

We have 39,200 records for the Oneill surname. The oldest one dates back to 1833.

Who were Oneills most likely to marry?



O Neills

Our Marriage record sets tell us which families married Oneills.

What are the most common Oneill first names?

  • John
  • James
  • Mary
  • Margaret

Our birth record sets tell us the names of Oneill family members

Common jobs for Oneills

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

Common Female occupations for Oneills in 1921


Domestic Servant


Cotton Weaver






Common Male occupations for Oneills 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 Oneill surname

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