Born in Chamdo in 1935, Tethong was the son of Gyurme Gyatso Tethong [fr] and Dolma Tsering (née Rong Dekyiling).[2] He went into exile in 1949, shortly before the Battle of Chamdo.[3] In 1959, he became a volunteer at refugee camps for Tibetans who fled after the 1959 Tibetan uprising, attracting the attention of the 14th Dalai Lama, for whom he became personal interpreter.[3] In 1968, he became leader of the Mundgod refugee camp,[4] where he met his wife, Judy.[5]