The House of Tulsipur ruled one of the largest Taluqs of Oudh, India, which then included the Dang and Deukhuri Valleys. Therefore, it also counted as one of the Baise Rajya (; 22 Principalities), a confederation in what became western Nepal. The town shares its name with another Tulsipur in Dang Deukhuri District, Nepal (c. north); the two towns are linked historically by having the same ruler. About 1760 AD, these kingdoms were annexed by the Shah Dynasty during the reunification of Nepal. Tulsipur lands south of the Siwalik Hills were not taken. Since Dang was somewhat higher, cooler, better-drained and therefore had fewer instances of malaria than most of Inner Terai Valleys of Nepal, it was settled to some extent by Shah and Rana courtiers and other Nepalese. Deukhuri was more of a Tharu enclave until DDT was introduced to control the malaria-bearing Anopheles mosquito in the 1950s.