 Kailashpati Mishra was born in Dudharchak, Buxar, Bihar, into a Bhumihar Brahmin family.He was a bachelor and popularly called the "Bhishmapitamah" of Bihar BJP.He was affiliated with the Rashtriya Swayamsevak Sangh from 1944 onwards, and was even jailed after the assassination of Mahatma Gandhi.