Answer: Sachindra Nath Sanyal
Notes: Revolutionary Sachindra Nath Sanyal He was the founder of the Hindustan Republican Association also known as Hindustan Socialist Republican Association. His 80th death anniversary was observed recently. He was a mentor for revolutionaries like Chandrasekhar Azad and Bhagat Singh. He along with Rashbehari Bose attacked Viceroy Hardinge while he was entering Delhi. Sanyal was imprisoned for his involvement in the plans for the Ghadar Conspiracy.
