Manggusi

Mangūs (Mongolian: ᠮᠠᠩᠭᠤᠰ, transcribed by Bao Pei: mangγus, Cyrillic: Мангус; Manchu: ᠮᠠᠩᡤᡡᠰ, transcribed by Mulin De: manggūs; approximate birth and death years: 16th century — 1620s, alive before 1623–1626), of the Borjigid clan, he was a seventeenth-generation descendant of Genghis Khan’s brother Khasar. In the 17th century, he served as Noyan of the Khorchin tribe. His biological father was Namusai, and his brothers were Minga and Kuo’er. His wife was the daughter of Gungbu Fuzhen, i.e., the Xiao Duanwen Emperor. He had a son named Zhaisang.

In 1612, his niece, Minga’s daughter, married Nurhaci, initiating a 300-year alliance through marital ties between the Manchu and Mongol peoples. The Mangūs family thus frequently engaged in marriage alliances with the Qing imperial family. According to the Manchu historical records "Manwen Laodang," dated March 13 of the Tianming era (1623), Mangūs was still alive. The "Shizu Shilu" ("Veritable Records of the Emperor Shizu") indicates that Mangūs passed away before the 11th year of Tianming (1626).

On July 24 of the Chongde 2nd year, Hong Taiji posthumously granted the title of Zasagal Buyantu Qinjwang (Chinese: Heshuo Fuqinwang) to his father-in-law Mangusi. His wife, Gungbu Fuzhen, was also granted a title. These actions illustrate the marital alliance between the Mangūs family and the Qing imperial ruling house, as well as their political standing within the Manchu-Mongol relations. Throughout the 17th century, Mangūs and his family played a vital role in forging political and kinship connections between the Mongols and the Qing dynasty, facilitating subsequent generations of marriage alliances and political union.