Firoza Sultan Begum (Beqa Sultan Begum) of the Tayichiud

The Tayichiud (Cyrillic: Тайчууд, Taichuud) was one of the three core tribes of the Khamag Mongol confederation in Mongolia during the 12th century.

Sultan Husayn Mirza Bayqara (Persian: حسین بایقرا‎ / Husayn Bāyqarā) was born in Herat in June–July 1438 C.E. to Ghiyas ud-din Mansur Mirza son of Bayqarah Mirza I son of Umar Shaikh Mirza I son of Amir Timur Beg Gurkani.

He was the Timurid ruler of Herat from 1469 until May 4, 1506, with a brief interruption in 1470.[1]

Ghiyas ud-din Mansur Mirza of the Barlas tribe was married to Firoza Sultan Begum daughter of Sultan Husayn son of Muhammad Beg son of Amir Musa of the powerful Tayichiud tribe.

To them were born two sons named Bayqara Mirza II and Sultan Husayn Mirza as well as two daughters.

Sultan Husayn Mirza in addition to Timurid and Genghis Khanid lines also claimed descent in the ninth generation from Khwaja Abdullah Ansari of Herat also known as Pir-e-Herat (Sage of Herat).[3] His father died when he was around seven or eight years of age.

Given that his father was not a noteworthy personality in the Timurid family he took the name Sultan Husayn Mirza Bayqarah after his more illustrious grandfather.[4] After consulting with his mother he entered the service of his older cousin Mirza Abul-Qasim Babur bin Baysonqor, ruler of Herat, in 1452.[5] Mirza Abul-Qasim Babur was not the best ruler. He mismanaged his territory and went into battle against Abu Sa'id Mirza, the Timurid ruler of Samarkand.[6] Sultan Husayn Mirza not happy with his employment tried to go over to Abu Sa'id Mirza by meeting with him. Although Abu Sa'id was inclined to take him into his service, a rebellion on part of Sultan Husayn Mirza's relative, Sultan Awais Mirza son of Muhammad Mirza son of Bayqarah Mirza, induced Abu Sa'id to arrest Sultan Husayn Mirza and other relatives as a precaution.[7]

Eventually on the plea of his mother, Firoza Begum, he was freed and he rejoined Mirza Abul-Qasim Babur bin Baysonqor till Baburs' death two years later.[8]

ref: https://en.wikipedia.org/wiki/Sultan_Husayn_Mirza_Bayqara