The baby name Merwyn appears in baby name data for the United States from 1913 to 1941. It was most popular in 1933 with 24 babies given the name.
Over the period shown, Merwyn has stayed at a similar level of popularity.
| Year | Count |
|---|---|
| 1913 | 15 |
| 1916 | 14 |
| 1933 | 24 |
| 1935 | 15 |
| 1936 | 5 |
| 1937 | 5 |
| 1939 | 5 |
| 1941 | 6 |