About the name Casimiro
Casimiro belongs to the Spanish and Portuguese 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, Casimiro first appears in Social Security records in 1881. It climbed to its best-ever rank of #803 in 1881, and in 2024 0 babies received the name — 1,078 in total since 1880. Those are the official counts, not estimates.