Rajmohan Gandhi with maternal grandfather Chakravarti Rajagopalachari
From Wikipedia:
Chakravarti Rajagopalachari, popularly known as Rajaji or C.R., also known as Mootharignar Rajaji, was an Indian statesman, writer, lawyer, and independence activist. Rajagopalachari was the last Governor-General of India, as India soon became a Republic in 1950.