Buqa was a Mongol lord and chancellor who was instrumental in sweeping Arghun to power as the fourth Il-Khan of Iran in 1284 and became his chief minister and advisor, succeeding Shams ad-Din Juvayni
Execution of Buqa on the orders of Arghun, 15th century
Mahmud Ghazan was the seventh ruler of the Mongol Empire's Ilkhanate division in modern-day Iran from 1295 to 1304. He was the son of Arghun, grandson of Abaqa Khan and great-grandson of Hulegu Khan,
Ghazan with wife at his court
Ghazan as a child, in the arms of his father Arghun, standing next to Arghun's father Abaqa, mounted on a horse
Ghazan mounted on a horse.
Seal of Mahmud Ghazan, over the last two lines of his 1302 letter to Pope Boniface VIII. The seal was given to Ghazan by the sixth Great Khan (Emperor ChengZong of Yuan). It is in Chinese script: "王府定國理民之寶", which means "Seal certifying the authority of his Royal Highness to establish a country and govern its people". Overwritten on it vertically, are two lines in Mongolian using the old, Aramaic-based, Uyghur script. Vatican Archives.