About the name Sadako
Sadako belongs to the Portuguese and Japanese 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, Sadako first appears in Social Security records in 1913. It climbed to its best-ever rank of #1693 in 1919, and in 2024 0 babies received the name — 349 in total since 1880. Those are the official counts, not estimates.