About the name Jansen
Jansen 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, Jansen first appears in Social Security records in 1958. It climbed to its best-ever rank of #1235 in 1994, and in 2024 45 babies received the name — 2,090 in total since 1880. Those are the official counts, not estimates.