10,567 Hennessy Members around the world.
See one of our recent Ireland101 Tribe Gatherings
The surname "Hennessy" is an Anglicised form of the Gaelic "Ó hAonghusa" meaning "son of Angus".
You must be logged in to add to the gallery.
Find your Hennessy ancestor
Tell us about your Hennessy Family
Ask a question about the Hennessy history
Tell us about your Hennessy ancestors
You must be logged in to post comments.