 By 1793 British East India company took complete control of Bengal (former Mughal province), making Mansur Khan just a titular ruler under the British Raj.Nawab Nazim Mansur Ali Khan was born to Nawab Mubarak Ali Khan II and Rais-un-nisa Begum on 29 October 1830.He was only eight years old when he succeeded his father on 29 October 1838, which happened to be the day of Eid ul-Fitr.