About the name Marilyn
Marilyn belongs to the English & American tradition. Its roots are documented, even though its precise meaning is not recorded in the standard references — an honest gap we prefer to a confident guess.
In the United States, Marilyn first appears in Social Security records in 1899. It climbed to its best-ever rank of #13 in 1936, and in 2024 432 babies received the name — 373,424 in total since 1880. Those are the official counts, not estimates.