Lewellyn
UnisexBoys' nameGirls' nameMeaning not yet documented
Lewellyn has been given to 339 babies in the U.S. since 1912. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1929, with 17 recorded. It's used for both sexes: 90% boys, 10% girls all-time.
Babies named Lewellyn, 1962
1 in 807,000
Lewellyn over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
Girls or boys — Lewellyn over time
In 1962, Lewellyn went to 0% girls and 100% boys.
A sex is only published in years it reached five applications, so a stretch at 0% or 100% means the other side stayed under that floor — not that it was never used.
How common is Lewellyn?
Lewellyn had fewer than 5 recorded uses in 2025, so these figures use 1962, the last year it was published.
- Among all babies, 1962
- 1 in 807,000
- 5 of 4,035,213 births
- Among boys only
- 1 in 414,000
- <0.01% of boys
- Rank, 1962
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 559,400 kids
- Even odds of a second one
Where Lewellyn sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 1962 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 559,400 children born in 1962 and it's an even bet that one of them is another Lewellyn. In a class of 30 the chance is Under 1%.
When Lewellyns were born
Half of everyone ever recorded as Lewellyn was born before 1929 — so the typical Lewellyn is around 96 today.
- Biggest decade
- 1920s
- 31.7% of all use
- Born in the last 25 years
- 32.0%
- Spread across generations
- Recorded since 1950
- 43
- People you could plausibly meet
1920s — 31.7% of all recorded uses (97).
Is Lewellyn rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- —
- Not ranked then
- Rank vs 5 years ago
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 0%
- Peak was 1929 (17)
- Years since peak
- 96
- Years
- Year-to-year steadiness
- Volatile
- 39.7% average annual change
Spellings of Lewellyn
Lewellyn is not the most common spelling — Llewellyn is, with 91.8% against Lewellyn's 8.2%.
- Llewellyn91.8%3,414
- Lewellyn8.2%306
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Lewellyn by the numbers
The raw record for each sex the name is used for.
As a boy's name
Names similar to Lewellyn
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Lewellyn
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.