Krishna Rao was the son of
Peshwa Baji Rao I and his second wife
Mastani, daughter of Maharaja
Chhatrasal and
Ruhani Rai Begum, Ruhani Bai. Bajirao wanted his son to be accepted as a
Hindu Brahmin, but because his mother was a Muslim, Brahmin priests refused to conduct the Hindu
upanayana ceremony for him. Thus, Bajirao ordered that he be raised as a
Muslim. His education and military training was conducted in line with other sons of the Peshwa family, even though many Maratha nobles and chiefs did not recognize Mastani as a legitimate wife of the Peshwa. After the death of both Baji Rao and Mastani in 1740, Shamsher was taken into the household of
Kashibai, Baji Rao's widow, and raised as one of her own. He married Laal Kunwar daughter of Abdul Momin (Lakshadhira Dalpatrao Pawar) on 14 January 1749, and soon after her death in 1753, Shamsher Bahadur was married to Mehrambai on 18 October 1753. Shamsher Bahadur had one son by Mehrambai named Krishna Sinh, later known as Ali Bahadur. He succeeded Shamsher Bahadur as the Peshwa
Subahdar of Banda. ==Military career and reign==