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