About the name Diann
Diann 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, Diann first appears in Social Security records in 1924. It climbed to its best-ever rank of #338 in 1947, and in 2024 0 babies received the name — 12,252 in total since 1880. Those are the official counts, not estimates.