 Thus the Namgyal dynasty ended in Limbuwan in 1741, and after breaking off ties with Sikkim, the four Limbu kings and their kingdoms remained neutral and independent.From 1609 to 1769, for about 160 years, the Sen kings of Makwanpur were nominal kings of Morang and allied to the other five kings of Limbuwan.The era of the Sen dynasty in Limbuwan began with the conquest of the Morang kingdom by King Lo Hang Sen to avenge the death of the prime minister of Morang.