Derived from a Latin name meaning “warlike.” Let’s hope this is not actually the case, because you don’t want him to be “that kid” at playdates.
Famous people named Marcus:
Roman emporer Marcus Aurelius; basketball players Marcus Camby and Marcus Sloane; football players Marcus Easley, Marcus Trufant, Marcus Mailei, and Marcus Thigpen; celebrity chef Marcus Samuelsson.
The name Marcus was extremely popular in ancient Rome, one famous Roman bearer being Marcus Antonius, a.k.a. Mark Antony.