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The o'leary Surname

o'leary Name Meaning and History

Irish (Munster): Americanized form of Ó Laoghaire ‘descendant of Laoghaire’, a byname originally meaning ‘keeper of the calves’, from laogh ‘calf’. This was the name of a 5th-century king of Ireland.

Dictionary of American Family Names, Oxford University Press, ISBN 0-19-508137-4
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o'leary Family Facts

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Distribution of o'leary Families in the US in 1920
Number of o'leary families
 52-101
 18-51		 1-17
 0
Compiled by Ancestry.com from the 1920 US Federal Census records

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