About Prafulla Chandra Sen
Prafulla Chandra Sen was an Indian politician and independence activist who was Chief Minister of West Bengal from 1962 to 1967. In 1923, Sen shifted to the area of Arambagh in the Hooghly District, which became his laboratory for Gandhian experiments on Swadeshi and Satyagraha. It is reported that Sen offered a pranam to Chatterjee every time they met, long after he became a national figure. After Roy's death in 1962, Sen became West Bengal's third Chief Minister. How a man of Senhati became the Gandhi of Arambagh is really amazing.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.