In the pre-historic time, the Jumla Valley might have been a lake like the Kathmandu Valley and it might have been made habitable by God Chandannath of Kashmir, who is said to have introduced the paddy crop there first, but in the medieval period this region was ruled by the renowned Mallas.
And then he subjugated the country of Gopalakaksha and the northern Kosalas and also the king of Mallas.
The Pradhanas who settled around the site before the Mallas have connections with the Durbar Square.