House of Siri Sanga Bo was a powerful dynasty which ruled parts of Sri Lanka from Vijayabahu III of Dambadeniya (1220–1224) until Rajasinha I of Sitawaka (1581–1591).

They had to change their capital city to Dambadeniya, Yapahuwa and Kurunagala because of continuous invasions from southern India.

[2] In the reign of Kalinga Magha, native Sinhala people moved to south and Maya Rata because of his remorseless governance in Kingdom of Polonnaruwa.

He obtained Lord Buddha's tooth relic and alms chalice to Dambadeniya from the place which Magha's people had buried them in Kotmale.

Rajasinha was advised by Kivendu to destroy significant Buddhist sites such as Sigiriya and Sri pada.

While he was returning from Balana, he was wounded by a pointed bamboo segment and died at the garden of Pethangoda in March 1592.