 He is a son of Satyendra Narayan Sinha, who was Chief Minister of Bihar, a veteran Indian National Congress leader and a seven-term Member of Parliament, also from the constituency of Aurangabad.He comes from a Rajput family.His mother Kishori Sinha was MP for Vaishali and his wife Shyama Singh also represented Aurangabad in the Lok Sabha.His grandfather Dr. Anugrah Narayan Sinha,known as "Bihar Vibhuti", was the first Deputy Chief Minister cum Finance Minister of Bihar and an eminent Gandhian; his father ""Chhote Saheb"" was close in his later years to Jayaprakash Narayan and was one of the most prominent leaders of the anti-Emergency movement in Bihar and also the President of the Bihar wing of the Janata Party in 1977.