The History of Humāyūn (Gulbadan Begam) 166: CXCVIII. Zainab-sultan Begam Miran-shahi (?) From Ar. adorning.

166

Fifth daughter of Sultan Mahmud Mirza and Khanzada Begam (b) Tirmizi, first cousin and wife of Babar.
She was married at the instance of Qut-luq-nigar, in the year of the capture of Kabul, i.e., 910H. (1504-5), perhaps at the time that Jahangir Mirza, Babar's half-brother, married her half-sister, Aq Begam. The marriage was not happy. Two or three years later Zainab died of small-pox.
Mems., 80.