Below are Prabhupada’s own words about his life in short. This was before he left for the US and the formation of ISKCON.
I was born 1st September 1896 in Calcutta as the third son of my father Late Gaura Mohon Dev and mother late Rajani Devi in the family of one of very respectable Gold merchant aristocracy of Calcutta. I was educated in the Scottish Churches College (B.A. 1920) and Netaji Subhas Candra was my college mate. I left education influenced by Mahatma Gandhi in 1921 and joined for some time in the national liberation and other social service movements. I was secretary of the Social Union movement of which Late Mr. J. Choudhury Bar-at-law was the president. In this movement there was a great stir for intercaste marriage in favor of Patel's (Vithalbhai) bill.
I was married during my student life in 1918 with Radharani Devi and she is in Calcutta with her sons and daughters five children and a few grand children also. After my education I was appointed (1921) as the Asst. Manager of Dr. Bose's Laboratory Ltd of Calcutta and then engaged myself in my personal business in the chemical line. I was a research student in chemical and medicinal composition and for the first time in India, I introduced Gadine preparation in the medical profession.
I met my spiritual master Late Bhaktisiddhanta Sarasvati Goswami in 1922 and he desired me to preach in the foreign countries the spiritual movement started by Lord Caitanya for enlightenment of all materialistic men all over the world. He gradually turned my mind from matter to spirit and I was accepted as his disciple in 1933 after full association of ten years. He left this world in 1936 and insisted to explain the mission in English. I started my paper Back to Godhead in 1944 and left home for good entirely to execute the order of my spiritual master in 1954. Since then my H.Q. is at Vrindaban and devote in literary work.
By Srila Prabhupada written on April 18 1961