Jumla was a part of Khasa kingdom during 11th to 13th century. After 13th century Khasa Kingdom collapsed and divided into Baise Rajya (2he Jumla Kingdom was one of the many kingdoms that dotted Nepal before its reunification by King Prithvi Narayan Shah of Gorkha and later by his younger son Bahadur Shah. The kingdom was founded around 1404 when Baliraja, who married the daughter of the last ruler of the Yatse (Malla) Kingdom, succeeded his father-in-law. It was one of the most powerful kingdoms in western Nepal, being one of the 22 Baise principalities of the Karnali region which had once been part of the larger Yatse Kingdom. After centuries of intermittent warfare it appropriated the kingdom of Mustang in 1760. In the late 18th century the Jumla kingdom successfully defended itself against the first attack by King Prithivi Narayan Shah, and legend even has it that he got injured in the battle. Later, with the help of the kingdoms surrounding Jumla, Bahadur Shah attacked again and annexed Jumla for the Gorkha kings in 1789. The Jumla kings were Thakuris (Sijapati, Malla, Shahi) like the Gorkha Kings.
The Jumla Kingdom belonged to the more extensive pre-unification kingdoms in Nepal. At the height of its power it extended from Mustang in the east to present day Uttarakhand, a state in modern-day India, territory that Kingdom of Nepal lost to the East India Company in 1816 during the partition of Nepal. The Jumla kings belonged to the Kalyal dynasty, linked to the Mewar clan of Rajasthan, India. There have also been marriages between the Jumla royal family and the Shah’s royal family of Nepal. The direct descendants of the erstwhile Jumla royal family include currently, Nepali Film legend Nir Shah, Former Director General of Nepal Electricity Authority Harish Chandra Shah, DIGP (Retd) Sher Bahadur Shah, Colonel Nepal Army (Retd.) Bhim Bahadur Shah and AIGP (Retd.) of Nepal Police, Surendra Bahadur Shah.2 principality) in Karnali-Bheri region and Kingdom of Jumla was one of them.