Ali Asghar was the son of Kartalab Khan Bahadur Shahi Qazi Ghulam Mustafa and Bibi Rasti, the daughter of Qazi Syed Rafi Mohammad. He was Mansabdar Punj Hazari Emir. His forefathers were settled in Ferozepur Jhirka for a long time and made a big estate in that town. His grandfather Dewan Shaikh Asaf and great grandfather Dewan Maskeen raised both name and fame. They were chief revenue officers of the province Mewat and were entitled Dewan by Mughals. In Shahnama Munawwar, he was mentioned as a “Mewati Ansari Khanzada” as he was the son of ‘Nawab Kartalab Khan’, hence ‘Khanzada’ and belonged to the family ‘Ansar’ of Medina, hence ‘Ansari’. Nawab Khan Zaman Khan Bahadur handed over the keys of the Red Fort along with some treasures to Bahadur Shah I on 1 Rabi' al-awwal, when emperor was staying near Delhi Nawab Khan Zaman Khan Bahadur along with some other nobles like Muhammad Khan Bangash, Mir Musharraf and Chabila Ram Nagar came with the treasure to join prince Izzuddin son of Jahandar Shah In the book, 'Muraqqa'e Dehli' or 'The Delhi Album' or 'The Delhi during Muhammad Shah', a great detail of Nawab Khan Zaman Khan Bahadur's life and works are mentioned
Awards and honours
Shah Alam I alias Bahadur Shah I in his third Juloos on 16 Jumada al-awwal awarded Khalat-e Barani
Shah Alam I in his third Juloos on 7 Dhu al-Qi'dah awarded him Mansab Teen Hazari and Do Hazari Sawar
Shah Alam I in his fourth Juloos on 22 Shawwal awarded Khalat-e Fakhra
Shah Alam I in his fifth Juloos on 5 Safar promoted ‘Khan Zaman Khan Bahadur Ghalib Jung’ with additional Mansab Char Hazari and zaat wa sowar
On Friday 15 Dhu al-Hijjah, in the second Juloos of Emperor Farrukhsiyar, 'Khan Zaman Khan Bahadur' and his close relative Islam Khan V attended the Friday prayer along with Emperor Farrukhsiyar
In between 7 and 12 Ramdan at the third Juloos of Emperor Farrukhsiyar, he was appointed as Naib Subahdar at Azimabad. In the same year at the end Ramdan, he was awarded with Rs. 1 lac
On 3 Moharram in the fourth Juloos of Farrukhsiyar, he was appointed as Naib Subahdar at Multan and was awarded with another Khalat. In the fifth Juloos of Farrukhsiyar on 27 Dhu al-Qi'dah, Aqidat Khan ibn Ameer Khan was appointed Naib Subahdar of Multan because of the transfer of 'Khan Zaman Khan Bahadur'
'Khan Zaman Khan Bahadur' visited the fort of Farrukhsiyar and presented 100 moharen and 7 horses and in return, he was awarded Khalat-e Khaas
On 5 Safar in the 6 Juloos, he was appointed as Subahdar at Awadh and Faujdar at Moazamabad and was awarded Mansabdar Punj Hazari and 3,000 Sawar. This appointment was made in place of Aziz Khan Chughtai. On 22 Rabi' al-awwal in the 7 Juloos, Mahabat Khan was appointed as Subahdar of Awadh in place of 'Khan Zaman Khan Bahadur' and in place of Sar Buland Khan, 'Khan Zaman Khan Bahadur' was appointed as Subahdar of Azimabad with the award of another Khalat
Muhammad Shah on 15 Jumada al-Thani in his 4 Juloos, appointed 'Khan Zaman Khan Bahadur' as his ‘Naib Mir Atish’ with the awards of Khalat and “Sar Pech”. Muhammad Shah also in his 4 Juloos on 16 Shawwal awarded him Khalate Fakhra and ‘’Sar Pech Marsah’’
He was also appointed as ‘Khidmat Daroghgi Topkhana’, a store of Armory at Multan
Marriage and children
He was first married to the sister of Islam Khan V also the daughter of Abdul Khaliq, son of Barkhurdar Khan I. His second wife was Shah Bibi, daughter of Qazi Syed Asadullah of Rewari and maternal granddaughter of Abdul Hadi, son of Qazi Ibrahim of Tijara.
