Name Origin
Name Origin

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Discover the Osullivan

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What does the Osullivan surname reveal about your family history?

The earliest occurrence of the Osullivan surname in our family history documents is from 1743, and we currently have 34,882 records where Osullivan 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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Osullivansin military records

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Osullivansin census records

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Osullivansin convict records

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Osullivansin parish records

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