Meaning and background
The story behind Hennessey
Hennessey is an Irish surname spelling related to Hennessy, which is an Anglicised form of Gaelic Ó hAonghusa. The older patronymic indicates descent from someone called Aonghus. This is a surname history rather than a claim that an individual dog has a particular ancestral family. It also resembles the spelling of a drinks brand, but that modern association is separate from the Irish name derivation.
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About Hennessey
Recorded as a dog’s name
Hennessey appears in 8 dog licence records in the 2022 New York City dataset.
How to read this count
These records cover New York City and may count the same dog in more than one licence period. They are not a national popularity ranking.
Pronunciation and rhythm
/hɛnəsi/
US English sound sequence, converted from the CMU dictionary. Stress marks are shown separately.
Stress on the first syllable in the recorded US readings.
View dictionary notation
/hɛnəsi/ · primary stress on syllable 1HH EH1 N AH0 S IY0
These are US dictionary readings. Personal, regional and other language pronunciations may differ.
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Sources and research notes (3)
- New York City Department of Health and Mental Hygiene NYC Dog Licensing Dataset — all seven available extract years, retrieved 24 October 2026 — Recorded name spellings in NYC licence-period rows, extract years 2016–2018, 2022–2024 and 2026. Evidence selects one stated year per name. Annual snapshots overlap; never sum them as unique dogs. No national popularity, etymology or owner naming-intent claim.
- Carnegie Mellon University / CMU Sphinx maintainers CMU US English Pronouncing Dictionary — US English dictionary readings; not owner-specific or exhaustive multilingual pronunciation
- City of Seattle Seattle Pet Licenses — DOG-only name aggregate, current source dated 6 October 2026 — Secondary spelling corroboration from dog-only licence rows. No cats, owner fields, national ranking or unique-dog claim.
References support the individual facts shown. A source link does not mean the entire profile has been verified.