Descendant of Angus; extremely energetic
Derived from the Irish surname Ó hAonghusa, meaning descendant of Aonghus (Angus). The name Angus is composed of Celtic elements meaning 'one' and 'choice' or 'vigor'. While historically a surname, it has transitioned into a rare given name often associated with luxury and spirited energy.
Fewer than 5 girls were named Hennessey in 2025.
Social media personality and sister of Cardi B
US births per 5-year period, 1990–present (SSA data).
