Marco Polo II

"Upon arriving in Venice, Nicolo discovered that his wife had died, leaving the care of a son, Marco (born in 1254 and thus fifteen years old), in his hands. In 1271, the two brothers and Marco began to trek eastward and in 1275 met the Great Khan.

Khan liked the youthful Marco and conscripted him into service for the Empire. Marco served in several high-level government positions, including as ambassador and as the governor of the city of Yangzhou. While the Great Khan enjoyed having the Polos as his subjects and diplomats, Khan eventually consented to allow them to leave the Empire, as long as they would escort a princess who was scheduled to wed a Persian king."