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Gender: Unisex
Origin: Irish
Meaning: One Strength, Energy

Hennessy is a...

The name Hennessy means One Strength, Energy and is of Irish origin. Hennessy is a name that's been used for any gender.

Irish/Scottish surname. It is the anglicized form of the Celtic name, meaning "descendant of Aonghus".

Hennessy Stats
Hennessy is on 10 members' favorite name lists
Hennessy is currently not ranked on the Baby Names popularity charts
Hennessy is currently not ranked in U.S. births