He was the fourth and youngest son of Mohandas Karamchand Gandhi. He was born in South Africa and returned to India with his parents as a young man. He became active in his father's movement, spending many terms in jail.He spent a lot of time with his father. He also became a prominent journalist, serving as editor of Hindustan Times.

Devdas fell in love with Lakshmi, the daughter of Rajaji, Devdas's father's associate in the Indian independence struggle. Due to Lakshmi's age at that time – she was only fifteen, whereas Devdas was twenty eight years – both Devdas's father and Rajaji asked the couple to wait for five years without seeing each other. After five years had passed, they were married with their fathers' permissions in 1933. Devdas and Lakshmi had four children, Rajmohan Gandhi, Gopalkrishna Gandhi, Ramchandra Gandhi and Tara (Bhattacharya).

Wikipedia: http://en.wikipedia.org/wiki/Devdas_Gandhi