Hennessey Name Meaning, Origin and Heraldry

The last name Hennessey is one of the recorded forms of Hennessy, a well-known Irish family name.

Regional accents shaped spellings long before dictionaries fixed them. The extra “e” in Hennessey is a spelling habit rather than a different name.

Heraldry is personal: arms associated with the Hennessy surname were borne by specific families, and sharing the name does not mean sharing the blazon. Want more than a summary? See the Hennessey family name pack.