Mirza Raja Bishan Singh was the Kachwaha Rajput ruler of the Kingdom of Amer .He succeeded his grandfather Mirza Raja Ram Singh I since his father Kishan Singh died in the lifetime of his grandfather.He was also the subahdar of the province of Assam from the year 1687 to 1695 in the reigning times of Mughal Emperor Aurangzeb.He is known to have fathered one of the most eminent political icons of 18th century India i.e Sawai Jai Singh II.

Mirza Raja Ram Singh I was the Raja of the Kingdom of Amber and head of the Kachwaha Rajput clan, succeeding his father Mirza Raja Jai Singh I. He also served as the general of the Mughal Empire and commander-in-chief of its army as well as the Subahdar of Kashmir.