Marcus m
The original Latin form of MARK (SEE Mark), of unknown derivation; it may possibly be connected with MARIUS (SEE Marius). This is also the form of the name in Scottish Gaelic, whence the surname Mac Mharrius, Anglicized as Marquis. Marcus was rarely used as a given name in the English-speaking world until recent years, when it has been seized on by parents seeking to give a distinctive form to a common and popular name. Among American Blacks it is sometimes bestowed in honour of the Black Consciousness leader Marcus Garvey (1887–1940).
First names dictionary. 2012.