O Brien
Surname Origin
Surname Origin

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O Brien Genealogy and Family History

What does the O Brien surname reveal about your family history?

The earliest occurrence of the O Brien surname in our family history documents is from 1651, and we currently have 310,403 records where O Brien appears. Here are a few more facts to get you started…

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Colour photo of a young Nurse and Soldier

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O Briensin military records

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O Briensin convict records

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O Briensin parish records

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