Swahili names are typically chosen based on their meaning or origin. If you're looking for a Swahili name that has a similar meaning to "Marcus," you could consider:
* Mwarabu: This name means "Arab" in Swahili and could be considered similar to Marcus as both names are of Latin origin.
* Malkia: This name means "queen" in Swahili and could be chosen if Marcus has strong leadership qualities.
* Mwenyewe: This name means "owner" or "master" in Swahili and could be chosen for someone who is strong and independent.
Ultimately, the best way to choose a Swahili name for Marcus would be to consider his personality, values, and the meaning of the name itself.