Hennessey Hennessey Name Origin

/HEN-uh-see/

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Name Details

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Name Origin

The surname Hennessey is of Irish origin, derived from the Gaelic Ó hÉignigh, meaning 'descendant of Éignigh'. It is also used as a given name in some contexts, especially in English-speaking countries.

This chart shows how many babies were given the name Hennessey each year, based on data from the U.S. Government's Social Security Administration (SSA).

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