Prof. Rajender Singh popularly known as RAJJU BHAIYA was born on 29 Jan 1922 in village Banel, Tehsil Shikarpur Dist. Bulandshahr of Uttar Pradesh. His Father Sri. Balbir Singh was the First Indian got selected in IES (Indian Engineering Services) exam. Rajju Bhaiya completed his PG in Physics from Allahabad University in 1943 and joined the university as the professor of physics on the request of the then Vice Chancellor . He worked as a professor and Head of the dept of Physics of Allahabad Unversity but left university services to devote his life in nation building through Rastriya Swyamsewak Sangh. He was the Fourth Sarsanghchalak of RSS w.e.f. 1994 to 2000.