Scene from the copy of the Shahnameh
commissioned by Baysonqor, 1430
Gīāṭ al-dīn Bāysonḡor, commonly known as Baysonqor or Baysunghur or (incorrectly) as Baysunqar, also called Sultan Bāysonḡor Bahādor Khan (1397, Herat - 1433, the Bāḡ-e Safīd palace near Herat) was a prince from the house of Timurids. He was known as a patron of arts and architecture, as well as a prominent calligrapher.
Bāysonḡor was a son of Mirza Shahrukh, the ruler of Persia and Transoxania, and Shakhrukh's most prominent wife Goharshad.
In the view of modern historians, Bāysonḡor was actually a better statesman than his more famous elder brother, Ulugh Beg, who inherited Shhrukh's throne.