Pratapgarh also has its share of Indian history and mostly unknown. The name of city is derived from Pratap Singh (1628-1682), a ruler of Rampur, who built a fortress (garh). But history before or after him is not known much. 

http://uqconnect.net/~zzhsoszy/ips/p/pratapgarh_up.html has good details on it and hopefully correct. Putting same below for people interested in Pratapgarh history and its rulers.