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Mirza Abul Hasan Jaafar Beg son of Itimaduddaula Mirza Ghiyas Beg, entitled by Emperor Jahangir with the court title of Asaf Khan was the father of Arjumand Banu Begum, also known as Mumtaz Mahal, who was the wife of the Mughal EmperorShah Jahan, the Emperor of India. Asaf Khan was also the elder brother of empress Nur Jahan, the consort of Shah Jahan's father, Jahangir. He was of Mughal descent. His other daughter Parwar Khanam was married to Mohtashim Khan, the son of Mughal EmperorJahangir's foster brother Qutubuddin Koka. Her mausoleum is located in Sheikhpur, Budaun.
Mirza Abul Hasan Asaf Khan was appointed Governor of Lahore by Emperor Jahangir in 1625. After the demise of Jahangir in 1627, he was instrumental in securing the accession of his son-in-law Shah Jahan by colluding with Dawar Bakht (Jahangir's other son) and defeating the rival claimant Prince Shahryar (Nur Jahan's son-in-law, married to her daughter by her previous marriage to Sher Afgan) in a battle near Lahore. Asaf Khan enjoyed a position even more elevated than in the preceding reign and retained it until 1632, when he failed in the siege of Bijapur, from which time he seems to have lost favour.