The Oirats were key supporters of the Mongol enterprise and helped to bring Chinggis Khan to power. Chinggis and his family intermarried with the royal lineage of the Oirats who were descended from Qutuqa Beki. As these marriages continued throughout Mongol history, descendants of Qutuqa Beki and Chinggis's daughter Checheyigen became key supporters of various successor khanates. In the Ilkhanate of Iran, one of their relatives, Tanggiz Küregen, and his family were intimately connected with the ruling house. The importance of Oirat military support for the Ilkhanid government was to such an extent that he and his descendants were regularly pardoned for treasonous acts. While other elite lineages such as the Juvainīs, the family of Arghun Aqa, and the Chupanids all had had great power and influence, they met violent ends at the hands of their Ilkhanid rulers. Tanggiz and his descendants however, were not only not overly punished for their acts of lèse-majesté, but in fact outlived the Ilkhanid Dynasty itself. This culminated in the government of ʿAlī Pādshāh, who ruled much of the former Ilkhanid realm through a puppet khan for a short period in 1336. This article investigates how Oirat power was both central to the Ilkhanid regime and helped cause its downfall.

This article discusses the career of three historical figures who had a position of authority in the courts of the Ilkhans and the Great Khans of the Mongol Empire in China: Rashid al-Din Tabib (d. 1318), the Persian statesman and historian; Liu Bingzhong (d. 1274), Qubilai Khan's (r. 1260-94) Chinese counsellor; and Bolad Aqa (d. 1313), the famed Mongol tribesman. This study raises the question of whether Rashid al-Din's policies, when he was in office as the vizier of Ghazan Khan (r. 1295-1304), were modelled in some respects on the approach of the Chinese nobles—Liu in particular—to the Mongols during the early stages of the Mongol rule over China. In addition, taking into account Bolad's noticeable presence in the courts of the Mongols in Ilkhanid Iran and Yuan China, it seeks to shed light on his role as an intermediary and a possible conduit for Chinese political thoughts to reach Rashid al-Din.