Hennessy

Meaning

Descendant of Aonghus, a Gaelic personal name meaning 'one choice' or 'unique vigor'.

Etymology

Hennessy derives from the Irish Gaelic 'Ó hAonghusa', where 'Ó' means 'descendant of' and Aonghus is a personal name. The name was anglicized from the Irish form through phonetic adaptation over centuries.

About the Hennessy Surname

Hennessy is a prominent Irish surname with roots in Gaelic nobility and clan traditions. The name is particularly associated with the Hennessy cognac brand, founded by an Irish merchant family.

Distribution

Primarily found in Ireland and among Irish diaspora communities, particularly in the United States, Australia, and Canada.

Notable Bearers

David Hennessy, James Hennessy (cognac producer)

People with the Hennessy Surname