[1][2] Prafulla Chandra Sen was born in the village Senhati in the Khulna District of Bengal on 10 April 1897 in a Baidya [3] family.

In 1923, Sen shifted to the area of Arambagh in the Hooghly district, which became his laboratory for Gandhian experiments on Swadeshi and Satyagraha.

He was one of the staunchest supporters of the Indian National Congress Party and led the freedom struggle against the British.

He was thought to have been encouraged by the then president of the union and the noted academic (headmaster of Arambagh High School) Nagendranath Chatterjee, whom he defeated in a poll, but they never lost mutual admiration.

It is reported that Sen offered a pranam to Chatterjee every time they met, long after he became a national figure.

During that time period, the Congress Party office at Serampore was his home and he earned virtually nothing, simply possessing one home-spun dhoti (sarong) and kurta.

In the partial exercise of democracy permitted by the British in the 1940s, Sen was elected to the Bengal Assembly from Arambagh in 1944 and was deputy leader of the Opposition.

After this setback, Sen, although re-elected to the West Bengal Assembly, never recovered high political office.

No special favors were offered by Sen but only a written letter for an ordinary general free bed in MLA quota if vacant with the medical college in Kolkata was provided to Sengupta's family.

One of his last acts, a fortnight before he died, was to participate, sitting in a wheelchair, in a Congress (I)-sponsored march in Calcutta to protest against the state's CPI(M)-led government.

The architect of Ajoy Mukherjee's victory at Arambagh was Narayan Ch Ghosh, the then student leader.