After the Yakkhas had left to live in the mountains and remote dense forests, they met Gautama Buddha who converted them to Buddhism.
[3] Buddha gave Sumana Saman (A leader of the Deva) a few hairs from his head, which were placed in a golden urn and enshrined in a sapphire stupa.
[4] Sumana Saman was a leader of the Deva who came from the central hills of Sri Lanka.
The ceremonial oracles, who represent the spirit of their ancestors of Lanka, in the temple are known as "Theyyam", originating from the word "Deyvam" meaning God.
However, by the time of the legendary arrival of Vijaya to Sri Lanka, a significant number of the Deva clan is held in popular tradition had intermingled with North Indians, Nagas and Yaksas, to create the Sinhalese lineage.