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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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The hennessy name in History

A unique volume of fascinating facts, statistics and commentary following the hennessy family name as far back in history as possible.

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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Year

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  • You can decide where (in which states) to start searching for hennessy records.
  • You can see how hennessy families moved over time by selecting different Census years.

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The information for this map came from Ancestry.com’s US Federal Census Collection.
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