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Origins of the O'Brennan surname

About the O'Brennans

We have a total of 93 records for people with the last name O'Brennan.

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    Delve deeper into the O'Brennan family's history

    OrkneyShetlandHighlandsWestern IslesGrampianTaysideCentralStrathclydeFifeLothianBordersDumfriesNorth EastNorth WestIsle of ManYorkshireEast MidlandsWest MidlandsEastLondonSouth EastSouth WestSouth WalesMid WalesWest WalesNorth WalesRepublic of IrelandNorthern Ireland

    In 1921, most O'Brennans lived in northern-ireland

    Census records trace your ancestors through each generation, so you can follow where your relatives lived through each decade.

    44 O'Brennan Travel & migration records
    49 O'Brennans found in all Census records

    Interesting facts about O'brennan

    How common is your surname?

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

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

    Who were O'brennans most likely to marry?

    Obrennans

    &

    Brennan Or O'Connors
    Our tell us which families married O'brennans.

    What are the most common O'brennan first names?

    James

    John

    Mary

    Julia

    Our tell us the names of O'brennan 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'brennans

    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'brennans in 1921

    Collar Dresser (Wes)

    1

    Errand Boy

    1

    Common male occupations for O'brennans in 1921

    Journeyman Tailor

    4

    Plasterer

    2

    Builder

    1

    Curate Of Liverpool B.A.

    1

    Errand Boy

    1

    We found over 1,200 family trees with the O'brennan surname

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