Compare two names
Lewellyn and Llewellyn side by side: Lewellyn peaked in 1929 and Llewellyn in 1918; in 2025 they were given to 0 and 27 babies.
Lewellyn and Llewellyn, year by year
Girls and boys together; Lewellyn solid, Llewellyn dashed.
| Lewellyn | Llewellyn | |
|---|---|---|
| Births 2025 | 0 | 27 |
| Rank 2025 | not ranked | #5,747 among boys’ names |
| Recorded since 1880 | 339 | 3,755 |
| Peak year | 1929 | 1918 |
| Girls | 10% | 9% |
| Alive, estimated | under 100 | 1,480 |
| Median age | n/a | 59 |
Both names: SSA national file, published May 8, 2026, and SSA’s cohort life tables.