Royal Family of Kumarsain
Kumarsain was founded in the 11th century A.D. as the capital of Kumharsain State. It was occupied by Nepal from 1803 to 1816, and by British India from 1839 to 1840.
Kirat Singh Parihar, also known as Kirti Singh (later Rana Kirat Chand), who was an office holder and Jagirdar at the court of Raja Narayan Pal of Bihar, founded Kumharsain State in the 11th century AD. He along with his two brothers (Kartar Singh and Prithvi Singh) was driven away from Gaya, by the fear of Mahmud Ghaznavi and settled around Kumharsain. They conquered the country from a local chief named Bhambu Rai of Delath.
Later on Kirat Singh gave a tract called Karangla to his brother Kartar Singh. Descendants of Kartar Singh founded the states of Khaneti and Kotkhai. The younger brother, Prithvi Singh, established his independent state at Delath.