Giani Gian Singh was scholar and theologian, was the elder son of Giani Bishan Singh, a collateral of the well known Giani house of Amritsar.The Panth Prakash and Twarikh Guru Khalsa are the most important works of Giani Gian Singh. His other books are: Suraj Prakash Vartak, an abridged version in prose of Bhai Santokh Singh's Sri Gur Pratap Suraj Granth; Ramayan Bhai Mani Singh Ji Di; Twarikh Amritsar (Urdu); Twarikh Lahore (Urdu) ; Patit Pavan; Gurdham Sangrah; Bhupendranand; Itihas Bagarian and Ripudaman Prakash