About the name Elmo
Elmo belongs to the Italian 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. It travels in a few spellings: Guglielmo.
In the United States, Elmo first appears in Social Security records in 1880. It climbed to its best-ever rank of #247 in 1909, and in 2024 0 babies received the name — 10,091 in total since 1880. Those are the official counts, not estimates.