Bidhan Chandra Roy was born to a Bengali Kayastha family on 1 July 1882 at Bankipore, Patna, Bihar, where his father, Prakash Chandra Roy, was working as an excise inspector. His mother, Aghore Kamini Devi, was a pious lady and a devoted social worker. Bidhan was the youngest of five siblings – he had 2 sisters, Susharbashini and Sarojini, and 2 brothers, Subodh and Sadhan. Bidhan's parents were ardent Brahmo Samajists, led an austere and disciplined life, and devoted their time and money to the service of everyone in need, irrespective of caste or creed.