About the name Milly
Milly 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, Milly first appears in Social Security records in 1884. It climbed to its best-ever rank of #714 in 1884, and in 2024 112 babies received the name — 3,234 in total since 1880. Those are the official counts, not estimates.