About the name Sonja
Sonja 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, Sonja first appears in Social Security records in 1906. It climbed to its best-ever rank of #180 in 1938, and in 2024 56 babies received the name — 39,476 in total since 1880. Those are the official counts, not estimates.