Uskhal Khan, Emperor Tianyuan of Northern Yuan

Chinese_Emperor


birth="Unknown"
death=1388¹
family_name= Clan Name (Obogh)
Borjigin
Khalkha Mongolian: Боржигин
Chinese: 孛兒只斤

begin_era=1378
end_era=1388²
posthumous_name_full="None Given"
begin_reign=1378
end_reign=1388
dynasty=Northern Yuan (北元)
given_name=Tögüs Temür
Chinese: 脫古思鐵木兒
temple_name=Yizong (益宗)
posthumous_name_short=Ningxiao Emperor (宁孝皇帝 Ningxiao Huangdi)
era_name=Tianyuan (天元)
notes=General note: "Dates given here are in the Julian calendar.
They are not in the proleptic Gregorian calendar.

Uskhal Khan, born Tögüs Temür (r. 1378-1388), was the Mongol Khan of the Northern Yuan Dynasty in Mongolia. He used the era name Tianyuan (天元).

Although Ming sources say that he was a son of Biligtü Khan, Tögüs Temür was his younger brotherFact|date=February 2007. He succeeded to the throne after Biligtü Khan died in 1378. He continued to press the Ming from the north, cooperating with Naghachu of the Jalayir in Manchuria. However, he suddenly faced a predicament in 1387 when Nagachu surrendered to the Ming due to a devastating famine. In 1388 he was raided by the Ming on the Buyir Nuur. In his escape to Karakorum, he was killed on the Tuul River by Yesüder, a descendant of Arigh Bukha. This marked the fall of the Khubilai line and the rise of the Oirats.