Glennon
Glennon is an Irish surname and given name. It is an anglicized form of the Gaelic Patronymic name Mag Leannáin, meaning "son of Leannán." The root word of this name is "leann," meaning "cloak." The surname was first found in Leinster, where they held a family seat from ancient times.
Meaning & Origin of Glennon
What this name means, where it came from, and how it has traveled across cultures.
Glennon is an Irish surname and given name. It is an anglicized form of the Gaelic Patronymic name Mag Leannáin, meaning "son of Leannán." The root word of this name is "leann," meaning "cloak." The surname was first found in Leinster, where they held a family seat from ancient times.
Source: Wikipedia (CC BY-SA 3.0). Read more →
The Story of Glennon
Glennon first appeared in U.S. Social Security Administration records as a baby boy name in 1912, with 5 babies given the name that year. Its peak popularity came in 1957, when 33 Glennons were born — ranking #1,364 that year. As of 2026, Glennon ranks #7,790 for baby boys with 6 births, with steady use. In total, more than 1K Glennons have been born in the U.S. since records began in 1880, spanning the 1910s through the 2020s.
Popularity Over Time
Popularity by State
Names that sound like Glennon
Phonetically similar names — useful when Glennon is the vibe but a different syllable count or letter feel might suit better. Linked entries have a profile on Peek a Name.
Source: Datamuse . Phonetic similarity ranking, not curated.
Frequently Asked Questions about Glennon
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About the name Glennon
Glennon is a boy baby name tracked by the U.S. Social Security Administration. It first appeared in SSA records in 1912 and has accumulated 1K births in the dataset. Glennon's peak popularity came in 1957 when it ranked #1,364. Use the chart and map above to compare Glennon's trajectory across years and U.S. states, or browse the related names section to discover similar choices.
Continue exploring
- Top names of 1957 →
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- Names starting with "G" →
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- Top names of 2026 →
Data sources
- Birth statistics (counts, ranks, years 1880–2026) — U.S. Social Security Administration . Predictions for years not yet released by SSA are computed by Peek a Name from historical trends; we update with official data as soon as it ships.
- Etymology, cultural origins, and related forms — Behind the Name (used under their public API terms).
- Meaning prose and editorial summary — Wikipedia article extracts, licensed under CC BY-SA 3.0 .
- Predicted nationality distribution — Nationalize.io .
- Phonetically similar names — Datamuse .
Peek a Name aggregates and presents the above data for informational purposes. Statistical predictions and external attributions are clearly labelled where shown; we make no guarantee of accuracy beyond what each source provides.