Thelmer is a very rare name used for both girls and boys that was most common in the 1920s and has all but disappeared.
Thelmer is predominantly a boy name. It last appears in U.S. records in 1938. Thelmer was first reported in SSA data in 1910 and peaked in 1915 (13 births).
Boys named Thelmer per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1910–1938 · U.S.+territories from SSA territory files (1998–1938) · SSA publishes a name only in years it was given to at least 5 babies, so a name may have been in use before — or between — the years shown here
Girls named Thelmer
Girls named Thelmer per year · hover for count and girls rank · Source: U.S. Social Security Administration, national data 1910–1938 · U.S.+territories from SSA territory files (1998–1938) · SSA publishes a name only in years it was given to at least 5 babies, so a name may have been in use before — or between — the years shown here