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Llewellyn vs Llewyn

American parents have registered 3,755 Llewellyns since 1880, against 553 Llewyns. Llewellyn is still ahead, with 27 babies in 2025.

Babies given each name, 1880–2025

Births per year: Llewellyn against Llewyn, 1880 to 2025 0 20 40 60 80 1880 1900 1920 1940 1960 1980 2000 2020

Llewellyn Llewyn

Each line is every baby given the name that year, girls and boys added together — the only count that means the same thing for both names. A line breaks where the name fell below five babies in a year — the point at which the SSA stops publishing it — rather than being drawn through a figure nobody published. A single published year in a gap shows as a dot.

Who was ahead

Of the 138 years in which either name was published, Llewellyn for 127 years and Llewyn for 11 years. The lead changed hands 2 times.

Side by side

  Llewellyn Llewyn
Total US births 3,755553
Most in one year 7963
Babies in 2025 2725
Estimated living today 1,500550
Median age today 595
Peak year 19162022
Best rank 724th boys2,408th boys
Rank in 2025 5,608th4,139th
First recorded 18802014
Girls / boys 341 / 3,41411 / 542

A rank is a position within one sex’s list for one year, so the two rank rows are not subtracted from one another and the winning column is not marked on them. The living figure is a life-table estimate, not a count.

Which name is older

Half of the Llewellyns alive today are over 59; half the Llewyns are over 5. That is 54 years between them: two names in use at the same time, worn by two different generations.

Where each one is strongest

How much commoner the name is in that state than it is nationally, from births recorded since 1910.

Both names abroad

Countries whose statistics office publishes both names, so the comparison can be made somewhere other than the United States.

Country Llewellyn Llewyn
England and Wales 25577

Every spelling a country files separately is added together, over whatever years that country publishes — which is not the same range in any two of them, so read the columns against each other and not the rows.

Compare something else

Related comparisons

Social Security Administration birth records, 1880–2025, public domain. Full histories: Llewellyn and Llewyn.