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Henessy
How to Pronounce Henessy
Pronounced HEN-uh-see /ΛhΙn.Ι.si/Medium
Meaning: Henessy is a respelling of Hennessy, an Irish surname from the Gaelic O hAonghusa, 'descendant of Aonghus,' Aonghus meaning 'one strength' or 'one choice'; the well-known Hennessy cognac house, founded by an Irish family, is a separate later association that many modern bearers of this first name are also nodding to.Low
Popularity in the U.S. Β· SSA data
U.S. births per year (Social Security Administration, 1880βpresent). Pink marker = peak year.
SSA data updated May 2026. How we source & verify this data.
History & Origin
Henessy is a respelling of Hennessy, an Irish surname from O hAonghusa, 'descendant of Aonghus.' As a modern American first name it draws both on this genuine Irish surname heritage and, for many families, on the familiar Hennessy cognac brand as a stylish sound.
Henessy was never common as a first name, given to only about twenty girls a year at its peak around 2009, and it has stayed rare since. It reads today as a bold, brand-adjacent surname name with real Irish roots underneath.
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Frequently Asked
What does the name Henessy mean?
It is a respelling of the Irish surname Hennessy, from Gaelic O hAonghusa, 'descendant of Aonghus'; it also echoes the well-known cognac brand.
How do you pronounce Henessy?
It is said HEN-uh-see /ΛhΙn.Ι.si/, three syllables with the stress on the first.
Is Henessy a boy or girl name?
Henessy is used as a girl's name.
How popular is Henessy?
It has always been rare in the United States as a first name, given to only about twenty girls a year at its peak in the late two-thousands.