Marco Polo
Arghun was the stated reason why Marco Polo was able to return to Venice after 23 years of absence. Arghun, having lost his favourite wife Bolgana, asked his granduncle and ally Kublai Khan to send him one of Bolgana's relatives as a new bride. The choice fell to the 17-year-old Kökötchin ("Blue, or Celestial, Dame"). Marco Polo was given the task of accompanying the princess through land and sea routes, navigating on a Mongolian ship through the Indian Ocean to Persia. The journey took two years and Arghun died in the meantime, so Kökötchin instead married Arghun's son Ghazan.
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