Tsewang Rigdzin is the main Long Life Deity of Bon. In the bontradition it is said, that he was the son of Drenpa Namkha. He was a realised master and Siddha.
(First Thangka: Family-collection Mösler; Second Thangka: photo was taken february 2007, Menri-Monastery, Dolanji India)