Marcelous is a very rare variant of Marcellus that peaked in 1997 and has grown less common since.
Marcelous is a boy name. In 2025 it ranked #13,214 for boy births in the United States (and #27,176 across all names), given to 5 babies. Marcelous was first reported in SSA data in 1984 and peaked in 1997 (8 births).
Boys named Marcelous per year · hover for count and boys rank · Source: U.S. Social Security Administration, national data 1984–2025 · U.S.+territories from SSA territory files (1998–2025) · 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