The History of Humāyūn (Gulbadan Begam) 84: XCVII. Khan-zada Begam Borqul (No. 16.)

84

The khan-born princess; Turki khan, and Pers. zada, born.
Gul-badan says she is a daughter of Sultan Mas'ud Mirza, and through a daughter grandchild of Payanda-Muhammad (sic) Sultan Begam, paternal great-aunt of Humayun. Babar names no such marriage of a daughter of Payanda: 'The second of the daughters [of Payanda] was Kichak Begam [whose name is probably a sobriquet]. Sultan Mas'ud Mirza was extremely attached to her, but whatever efforts he made, Payanda-sultan Begam, having an aversion to him, would not consent to the match. She was afterwards' (Turki sungra, P. de C. dans la suite) 'married to Mulla Khwaja.'
A daughter of Husain Bahiqra and of Baba Cighatta, whose name was Sa'idat-bakht and title Begam Sultan, was married to Mas'ud after his blinding. Her daughter might be fitly described as of inferior rank to the great begams. Such a description is given by Babar of 'Khan-zada, daughter of Sultan Mas'ud Mirza.' Husain and Payanda's daughter would certainly rank as equal in birth to the daughters of Abu-sa'id, since she was a full Timurid.
The 'extreme attachment' of Mas'ud to Kichak fits Musalman marriage better than Musalman courtship. It may be that, spite of Payanda's opposition, Mas'ud married Kichak. The 'afterwards' of the Memoirs (supra) and the de la suite of Pavet de Courteille seem to demand some more definite antecedent than Masud’s attachment. Moreover, this presumably persisted with his wish to marry Kichak. Did he marry Kichak, and was she divorced after his blinding or at some other time, and then was Sa’adat-bakht given to him?
Mems., 181, 182, 387. Gul-badan, 246.