Simple and universal, Marco is a Latin classic that would make a much livelier namesake for an Uncle Mark. It was used for her son by actress Jill Hennessy, and goes well with any straightforward surname.
Marco, related to the Roman god Mars, has long been associated with Marco Polo, the thirteenth century Venetian merchant-traveler who was instrumental in introducing Europeans to Asian culture. Eugene O'Neill wrote a play called "Marco Millions," based on the life of Marco Polo.
Marco retains its long-term popularity in Italy, where it is currently Number 11.