Origins of the O'Reilly surname

About the O'Reillys

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

Find out more about your family in our records

    or try an advanced search
    Start free trial
    “
    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.
    SS
    Stuart
    Trustpilot logoTrustpilot 5 stars
    1 of 3

    Start your family tree

    Trace your family back in time. Make new discoveries and see what other Findmypast family historians in our genealogy community have discovered about the O'Reillys.

    Sign up to get started

    Delve deeper into the O'Reilly family's history

    OrkneyShetlandHighlandsWestern IslesGrampianTaysideCentralStrathclydeFifeLothianBordersDumfriesNorth East 27North West 82Isle of Man 2Yorkshire 34East Midlands 15West Midlands 23East 27London 395South East 114South West 51South Wales 7Mid Wales 1West WalesNorth Wales 1Republic of IrelandNorthern Ireland

    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.

    17,000 O'Reilly Travel & migration records
    6,800 O'Reillys found in all Census records

    Interesting facts about O'reilly

    How common is your surname?

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

    We have for the O'reilly surname. The oldest one dates back to 1841.

    Who were O'reillys most likely to marry?

    O Reillys

    &

    Our tell us which families married O'reillys.

    What are the most common O'reilly first names?

    John

    James

    Mary

    Margaret

    Our tell us the names of O'reilly family members
    Man with milk churns and census card collage
    Census records provide incredible detail on names, ages, marital statuses, occupations and more.

    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

    We found over 33,000 family trees with the O'reilly surname

    Trace your family back in time and see what other Findmypast family historians in our genealogy community have discovered about the O'reillys.

    Search for a relative in our family trees

    Learn more about the lives of O'reilly family members

    How rare is your surname?

    Have you ever wondered if your family na...

    The rise and fall of these disappearing British surnames

    Could your surname be on the brink of di...

    English surnames explained: The seven types of last names you should know

    Ever wondered where our last names come...

    How to find the maiden names of women in your family tree

    Try these simple tricks to pinpoint your...

    4 simple steps to starting your family history journey

    Starting your family history journey is...

    Share your discoveries

    Share to WhatsApp

    Share to Facebook

    Look for a different surname