Rising since 2015.
Popularity of Marcelus since 1970
Babies named Marcelus per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1970s | 19 |
| 1980s | 38 |
| 1990s | 101 |
| 2000s | 64 |
| 2010s | 53 |
| 2020s | 32 |
Meaning & origin
Marcelus is a rare and distinctive given name that has never cracked the U.S. top 1000. Its peak came in 1996, and since 2015 its trajectory has turned upward, making it one of the quiet risers in American baby-naming. The name is an elaborated spelling of Marcellus, a Roman clan name ultimately connected to Marcus and the god Mars. Though it remains uncommon, with an estimated one-in-N ratio too low to measure, its recent growth suggests appeal among parents seeking formal, Latin-inflected choices that avoid the mainstream. The name has not been recorded in any U.S. state's top lists, reinforcing its rarity as a national outlier.
Marcelus is a variant of Marcellus, itself a diminutive of the ancient Roman praenomen Marcus. Marcus is traditionally linked to the Roman god Mars, the deity of war, though the etymology is debated. The name has been used in various forms across Europe since the Renaissance, often in honor of saints named Marcellus. Marcelus as a spelling variant is a modern respelling, possibly influenced by names like Angelo.
Nicknames & variants
Nicknames: Marcel, Mars, Marcy
Sibling names for Marcelus
Names that share Marcelus's style, for a brother or sister.

