About the name Rei
Rei belongs to the Biblical & Christian 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, Rei first appears in Social Security records in 1987. It climbed to its best-ever rank of #3402 in 2021, and in 2024 29 babies received the name — 443 in total since 1880. Those are the official counts, not estimates.