The Royal House of Tulsipur or Tulsipur-Dang was one of 22 principalities in the Baise Rajya confederation of the western Rapti region before the unification of Nepal, c. 1760. The Rajas of Tulsipur-Dang belonged to the Chauhan clan. From Chaughera (near Ghorahi, Dang) they ruled the Dang and Deukhuri Valleys as well as territories around Tulsipur State south of the Siwaliks, now in India.
Tulsipur kingdom was about 150 by 150 miles. It bordered Salyan Rajya (Nepal) and Pyuthan (Nepal) in the north, Balarampur Principality (India) in the south, Madi Khola (Nepal) and Arnala River (Basti, India) in the east and Bahraich (India) in the west.
During the unification of Nepal, the part in the Siwaliks and the valleys to the north were ceded to Nepal. Remaining lands became known as Tulsipur State, one of the largest Taluqs of Awadh in India. After the Indian Rebellion of 1857 the Tulsipur State was absorbed by the British East India Company.
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