Mansur Ali Khan

Nawab Sayyid Mansur Ali Khan was Nawab of Bengal until his abdication in 1880, whereupon he renounced his titles and position as Nawab of Bengal. Bengal had been under occupation of the British East India Company since 1773 when Warren Hastings was appointed by the East India Company as the first GovernorGeneral of Bengal. By 1793 British East India company has taken complete control of Bengal . So Mansur Khan was a mere titular ruler under the British Raj.

Nawab Nazim Mansur Ali Khan was born to Nawab Mubarak Ali Khan II and Raisunnisa Begum on October 29, 1830. He was only eight years old when he ascended his father Nawab Mubarak Ali Khan II on October 29, 1838, which happened to be the day of Eid ulFitr. He received the titles of MuntizamulMulk , Mohsen udDaulah , Feradun Jah and Nasrut jang . However, he was popularly known as Nawab Nazim Feradun Jah or JanabeAli. Later, he was abdicated and received the lesser title of Nawab Bahadur and was denied the use of the qualification of His Highness.

Source: Wikipedia