Marco Polo, anyone? It's not a bad association, to be honest. Marco Polo was a Venetian merchant traveler, and like Christopher Columbus, Polo was interested in the Orient. In fact, his stories of traveling through Asia (and he was probably the first Westerner to do so) inspired Columbus, although Columbus made a mistake and ended up being famous for a completely new reason (America). Two great adventurers, and they'd probably make a good sibling set. In 2010 there were 1,297 baby boys named Marco, ranking at #264, and 109 spelled Marko. It is ever popular in Italy and Spain, and ever subject to double names like Gianmarco or Marco Antonio.
Marco is Latin, meaning "from the god Mars" or "dedicated to the god Mars." Mars, as you know, was the Roman god of war (and spring), but he was said to have a gentle side. All of this makes Marco a strong, historical, handsome and classic choice.
For those of you with a crush on Ian Somerhalder check out pictures of him in his role as Marco Polo.