Abaqa Khan
Juvayni's brother was the powerful Shams al-Din Mohammad Sahib-Divan, who had served as Minister of Finance under Hulagu and Abaqa Khan. A skillful leader in his own right, Shams al-Din also had influential in-laws: his wife Khoshak was the daughter of Avag Mkhargrdzeli, Lord High Constable of Georgia, and Gvantsa, a noblewoman who went on to become queen of Georgia.