Keilly
Feminine · “Irish ceallach”
Keilly is an Irish surname written through Spanish orthography. Kelly reached Latin America with Irish emigrants and Irish soldiers, and Spanish speakers rendered it with the digraphs their own language uses: ei for the vowel, ll for the l. The name has crossed two languages and neither spelling is wrong.
How old is the name Keilly?
Keilly first appears in US birth records in 1993 — 32 years ago. The typical Keilly alive today was born around 2010, making them about 15 years old. About 600 people named Keilly are estimated to be alive in the US today.
When was the name Keilly most popular?
Keilly peaked in 2011, reaching #3350 nationally. Today it ranks #8860, 5,510 places below that high. See the whole 2011 chart.
Lists built from the same records:
Where it comes from
From Ceallach to Keilly
The story of Keilly
The Irish presence in Latin America is larger than most people expect. Irish soldiers served in the Spanish armies from the seventeenth century, Irish merchants settled in the ports, and nineteenth-century emigration took tens of thousands to Argentina in particular, where the community was substantial enough to support its own newspapers. Bernardo O'Higgins, one of the liberators of Chile, was the son of an Irishman from Sligo. Che Guevara's full surname was Guevara Lynch, the Lynch being Irish by way of Galway. The surnames that came with them were written in Spanish, which produced spellings like Keilly, Obrien and Macnamara, and those spellings then traveled back north with later migration. What looks like an American respelling is often a Spanish one with its own history.
Meaningscholars disagree
Irish ceallach, meaning disputed
From the Irish O Ceallaigh, descendant of Ceallach, a personal name variously read as bright-headed, strife, or frequenting churches; none of the three commands agreement. Keilly is a Spanish-influenced respelling of Kelly, using ei and a doubled l. It peaks in the American data in 2011, chiefly among Spanish-speaking families.
How the name formed
- Ceallach
- Kelly
- Keilly
Related forms: Kelly · O Ceallaigh
Pronouncing Keilly
KAY-lee
Two syllables, stress on the first. The ei is read as a long a in Spanish-influenced spelling, so Keilly is closer to Kaylee than to Kelly. English speakers reading it cold say KEE-lee or KEL-ee.
Nicknames for Keilly
Moderate
What the data says
146 years of official birth records
The long climb, and where it stands now
The same years in position rather than babies
- First recorded
- 1993
- Most girls named
- 201148 — the highest on record
- Peak rank
- #3350reached in 2011
- Change vs 2024
- −15.4%11 in 2025, from 13
Rank is a position, a count is a headcount, and they move independently — a name can hold its rank while the number of babies behind it falls. Source: U.S. Social Security Administration.
Keilly in other languages
The same name elsewhere
- Kelly in English — spelling variant
- O Ceallaigh in Irish — related form
Strongest US states over the last decade: Texas, California.
Keillys among us
people named Keilly are estimated to be alive in the US today
About 1 girl in 146,115 born in 2025 was named Keilly
Estimated from SSA birth records and published actuarial life tables. Method
Spellings of Keilly
- #8860
- Keilly on the 2025 chart
- #685
- counting every spelling
The SSA counts spellings, not names. Keilly went to 11 girls in 2025, but Keily, Keyli and Keili are the same name said out loud. Together the 4 spellings went to 282, which makes it the 685th most-given girls’ name of the year — 8,175 places above the chart.
About 1 girl in 5,700 born in 2025 was given one of these spellings — against 1 in 146,115 for Keilly itself.
Spellings are grouped by a fixed rule that folds interchangeable English spellings of one sound (ck/k, ph/f, x/ks, a non-initial y for i) and keeps vowels apart, so Sean and Shawn stay separate names. It errs towards splitting: a family here is never larger than the truth. SSA national data, 2025. Method
Is it right for you
What happens to a name after it peaks
The Merrianne test
Every popular name lives one long story — a climb, a peak, a slow settling back. Keilly's later chapters haven't been written yet, so we borrowed them: Merrianne climbed just as high around 1948, and its whole arc is on record. Line the two peaks up, and Merrianne's path sketches the road Keilly is walking now.
Keilly sits in the calm middle of the cycle — neither chasing a wave nor sliding off one. Middle-of-the-cycle names age slowly and predictably.
A scored estimate from 146 years of naming cycles — not a prophecy. Great names outlive statistics. How this is scored
Keilly beside its neighbors
The names ranked closest to Keilly in 2025, in babies rather than position — the bars are to scale.
US girls given each name in 2025.
The trade-off
- The Irish surname behind it is documented back to the tenth century.
- Kelly is available as a familiar form.
- It is short and easy to say once heard.
- At least three readings of the ei digraph circulate.
- Kelly is far more common in every spelling.
- The Irish name's meaning is genuinely disputed.
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What they receive
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Keilly
Feminine · #8860 in the U.S.
Frequently asked
- How many Keillys are there in the world?
- No country counts the world's names, so there is no worldwide figure — anyone quoting one is estimating. About 600 people named Keilly are estimated to be alive in the US today.
- How do you spell Keilly?
- Keilly is one of 4 recorded spellings. Keily is the more common one — 194 births in 2025 against 11 for Keilly.
- How popular is the name Keilly in 2025?
- Keilly ranks #8860 among US girl names in 2025, with 11 babies given the name.
- How rare is the name Keilly?
- About 1 in every 146,115 US girls born in 2025 was named Keilly — 11 in all.
- Will my child share the name Keilly with classmates?
- Keilly will almost certainly be the only one in school.
Ranked beside Keilly
Names sitting at a similar level of popularity right now.
Lida#8860 · Lauretta#8860 · Dot#8860 · Bonita#8860 · Benita#8860 · Trixie#8860 · Adna#8860 · Sue#8860
Looking for what else is popular rather than what resembles Keilly? See the current top 100.
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US figures from the Social Security Administration. 1880–2025. Data & methodology
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