The Tatsak Jedrung incarnation line is also known as the Olga Jedrung. The first to hold the title was Ngawang Chokyi Wangchuk who became the Fifth Tatsak Jedrung. Previous incarnations were identified as the first through the fourth, the first being Baso Chokyi Gyeltsen, who was a disciple of Tsongkhapa Lobzang Drakpa and the younger brother of Khedrubje Gelek Pelzang. Wonpo Lhakyab, a nephew of the First Pakpa Lha, Dechen Dorje, was given the title of Second Tatsak Jedrung, and a fictional person named Liyul Chogyel was created to bridge the gap between the Second and the Fourth. Beginning with the Ninth Tatsak, the incarnation line also became known as the Kundeling Hutuktu after the Kundeling temple, which was offered to this incarnation line in perpetuity by the Qing emperor. The Eighth Tatsak, Yeshe Lobzang Tenpai Gonpo and the Tenth Tatsak, Ngawang Pelden Chokyi Gyeltsen both served as regent of Tibet.