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Origins of the O'Neil surname

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About the O'Neils

We have a total number of 88964 records for people with the last name O'Neil.

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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'Neil family's history

Where do most O'Neils live?

In 1921, most O'Neils 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'Neils

How common is your surname?

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

We have 34,200 records for the O'Neil surname. The oldest one dates back to 1810.

Who were O'Neils most likely to marry?



O Neils

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

What are the most common O'Neil first names?

  • John
  • James
  • Mary
  • Margaret

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

Common jobs for O'Neils

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'Neils in 1921


Domestic Servant


Cotton Weaver


Mill Worker




Common Male occupations for O'Neils in 1921
Coal Miner


General Labourer


Dock Labourer






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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'Neil surname

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