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The hennessy Surname

hennessy Name Meaning and History

Irish: reduced form of O’Hennessy, an Anglicized form of Gaelic Ó hAonghusa ‘descendant of Aonghus’ (see Angus, and compare McGinnis).

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

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Distribution of hennessy Families in the US in 1920
Number of hennessy families
 169-336
 57-168
 1-56
 0
Compiled by Ancestry.com from the 1920 US Federal Census records

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The hennessy name in History

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