Marcello is a common masculine Italian given name. It is a variant of Marcellus. The Spanish and Portuguese version of the name is Marcelo, differing in having only one "l", while the Greek form is Markellos. Etymology. The name originally means like a hammer. It is originally the adjectival form of Marcus, which means hammer; the -el suffix was in times of archaic Latin the adjectival form. It also sounds like mar 'cello'. People with given name. Marcello Abbado (1926–2020), Italian pianist. Marcello Boldrini (1890–1969), Italian statistician.
https://en.wikipedia.org/wiki/Marcello