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Origins of the O'Reilly surname

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About the O'Reillys

We have a total number of 24196 records for people with the last name O'Reilly.

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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'Reilly family's history

Where do most O'Reillys live?

In 1921, most O'Reillys 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'Reillys

How common is your surname?

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

We have 6,810 records for the O'Reilly surname. The oldest one dates back to 1841.

Who were O'Reillys most likely to marry?

O Reillys

&

Oreillys

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

What are the most common O'Reilly first names?

  • John
  • James
  • Mary
  • Margaret

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

Common jobs for O'Reillys

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'Reillys in 1921
Dressmaker

23

Living On Own Means

18

Housekeeper

16

None

16

Cook Domestic

14

Common Male occupations for O'Reillys in 1921
Tailor

28

General Labourer

23

Roman Catholic Priest

22

Semiskilled Chauffeurs And Drivers

22

Clerk

20

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

We found over 31,000 family trees with the O'Reilly surname

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