We need further more investigation and historical research to find the fact about the origin of Sunuwar people. However, Sunuwar peoples believe themselves as Suryavanshi, family of the Sun. It is said that Sunuwar tribe is from Kirat group. According to history, there were three states of Kiratas in Eastern Nepal- Far Kirat, Mid Kirat and Near Kirat. Mid Kirat and Far Kirat are known as Rai and Limbu respectively. And the Near Kirat is known as Sunuwar who spread over the river-bank of Sunkoshi, Likhu and Khimti and slowly they spread all over the world.