Baysonqor, governor of Herat from 1415, establishes a famed academy of book production, thereby spurring the development of manuscript illumination in Timurid Persia.

Baysonqor is a son of Mirza Shahrukh, the ruler of Persia and Transoxania, and Shakhrukh's most prominent wife Goharshad.

In the view of modern historians, Baysonqor was actually a better statesman than his more famous elder brother, Ulugh Beg, who inherited Shahrukh's throne.