Khushal Singh was the Nawab of Singhpuria Misl from 1753 to 1795, extending its territory on both sides of the Sutlej River. His 'acquired' lands included Jalandhar, Nurpur, Bahrampur, Patti and Bharatgarh. Jalandhar doab and adjoining areas yielded an annual income of three lakh rupees. He was the successor to Nawab Kapur Singh Virk.
Khushal Singh had occupied the town of Jalandhar by narrowly defeating its ruler Shaikh Nizam-ud-Din. He made Jalandhar his headquarters and started living there. Khushal Singh added more precinct to the territory which he had inherited from his predecessor. His associates also captured many places. He was opposed to the just Muslim rulers He seized Ludhiana and Banur with the help of Amar Singh, the ruler of Patiala, who afterwards received half of the district of Banur. During the troubles which followed the death of Amar Singh, Khushal Singh seized the whole district. He, however, was not very intelligent and decided to bring a weak resistance to the mighty force brought against him and Diivan Wannu Mal defeated him recovering his Patiala share of the territory and forcing Khushal to retreat with his tail behind his legs.
Khushal Singh constructed a katra at Amritsar, 47 which was named after his Misal. He, realised tribute from Rai Ibrahim and many other zamindars.48 He fought in the battles against the strong Ahmad Shah Abdali in collaboration with other Sardars.
When Ahmad Shah Abdali made his eighth invasion of the Punjab in December 1756, Khushal Singh, accompanied by Tara Singh Gbaiba, with 6000 horsemen, was stationed at Taragarh to check his progress eastwards after the Durrani left Lahore. On 15 January 1767, Ahmad Shah wrote letters to the Sardars, including Khushal Singh, to the effect that if they were desirous of entering his service they should come and join him, but if they had any hostile intentions they should meet him in the field and fight him.49 Khushal Singh and others warily accepted Durrani's proposal of joining him and told to meet hire in the field of battle.