About the name Nan
Nan 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, Nan first appears in Social Security records in 1880. It climbed to its best-ever rank of #341 in 1883, and in 2024 0 babies received the name — 10,274 in total since 1880. Those are the official counts, not estimates.