Marcellius is a classical Roman name derived from the Latin 'Marcellus', which means 'dedicated to Mars', the Roman god of war. The name has a strong, traditional feel and was popular among the ancient Romans. It is composed of two elements: 'Mars', the name of the Roman god, and '-ellus', a diminutive suffix meaning 'little'. Thus, Marcellius translates to 'little warrior' or 'dedicated to Mars'. This name was not particularly common in other periods, but it has been used sporadically throughout history. It is often associated with ancient Roman culture and mythology.
"Marcellius is a name that experienced varying popularity over the years, with peaks in 1975 and 2005 having seven births each, and troughs like 1983, 1987, 1990, 1992, 1999, and 2001 seeing only five births. Overall, there were 61 babies named Marcellius born between 1974 and 2008."