Gurbakhsh Singh who accompanied his father in his various campaigns of conquest won reputation as the conqueror of the Karigra Fort which he seized from its Afghan occupant in 1783. Gurbakhsh Singh was killed in February 1785 while assisting his father in a battle fought against the allied forces of Mahari Singh Sukkarchakkia and Raja Sansar Chand of Kangra, near the town of Batala.
References :
1. Griffin, Lepel, and C.F- Massy, Chiefs and Families of Note in the Punjab. Lahore, 1909
2. Seetal, Sohan Singh, The Sikh Misals and the Punjab. Ludhiana, n.d.