Deaths on May 23

Toghon Temür, Mongol emperor (b. 1320)

Toghon Temür (Mongolian: Тогоонтөмөр, Togoontömör; Mongol script: ᠲᠤᠭᠤᠨᠲᠡᠮᠤᠷ ᠬᠠᠭᠠᠨ (rotated 90°); Chinese: 妥懽貼睦爾; pinyin: tuohuantiemu'er; 25 May 1320 – 23 May 1370), also known by the temple name Huizong (Chinese: 惠宗) bestowed by the Northern Yuan dynasty and by the posthumous name Emperor Shun (Chinese: 順帝; Wade–Giles: Shun-ti) bestowed by the Hongwu Emperor of the Ming dynasty, was a son of Khutughtu Khan Kusala who ruled as emperor of the Yuan dynasty and later the Northern Yuan dynasty. Apart from Emperor of China, he is also considered the last Khagan of the Mongol Empire.During the last years of his reign, the Yuan dynasty was overthrown by the Red Turban Rebellion, which established the Ming dynasty, although Yuan remnants remained in control of northern China and the Mongolian Plateau. As such, he was the final monarch of the Yuan dynasty and the first ruler of the Northern Yuan dynasty.

Emperor Huizong was a Buddhist student of the Karmapas (heads of the Karma Kagyu school of Tibetan Buddhism) and is considered a previous incarnation of the Tai Situpas. He also notably invited the Jonang savant Dölpopa Shérab Gyeltsen to teach him, but was rebuffed.