As per medieval history Rampur was the part of Delhi and was divided between Badaun and Sambhal districts. Being situated on upperside of Rohilkhand, it was known by the name Kather and was ruled by Katheria Rajputs. The Katheria Rajputs fought for about 400 years with the rulers of Delhi and later with Mughals. They fought with Naseeruddin Mahmood in 1253, Gaisuddin Balwan in 1256, Jalaluddin Firoz in 1290, Firoj Shah in 1379 & Sikander Lodhi in 1494. In the beginning of Mughal period the capital of Rohilkhand was changed from Badaun to Bareilly and hence the importance of Rampur increased.
The Rohilla War of 1774-5 began when the Rohillas reneged on a debt they owed the Nawab of Oudh for military assistance against the Marathas in 1772. The Rohillas were defeated and driven from their former capital of Bareilly by the Nawab of Oudh with the assistance of the East India Company's troops. The Rohilla State of Rampur was established by Nawab Faizullah Khan on 7 October 1774 in the presence of British Commander Colonel Champion, and remained a pliant state under British protection thereafter.
he first stone of the new Fort at Rampur was laid in 1775 by Nawab Faizullah Khan. Originally it was a group of four villages named Kather, the name of Raja Ram Singh. The first Nawab proposed to rename the city 'Faizabad'. But many other places were known by the name Faizabad so its name was changed to Mustafabad alias Rampur. Nawwab Faizullah Khan ruled for 20 years. He was a great patron of scholarship, and began the collection of Arabic, Persian, Turkish and Urdu manuscripts which now make up the bulk of the Rampur Raza Library. After his death his son Muhammad Ali Khan took over, but he was killed by the Rohilla leaders after 24 days, and Ghulam Muhammad Khan, the brother of the deceased, was proclaimed Nawab. The East India Company took exception to this, and after a reign of just 3 months and 22 days Ghulam Muhammad Khan was defeated by its forces. The
