South Tibet
Dorje Shugden, also known as "Dolgyal", originated as a "gyalpo" "angry and vengeful spirit" of South Tibet. Originally from the Sakya school as a minor protector that was part of the Three Gyalpo Kings (Shugden, Setrap, and Tsiu Marpo), Shugden was subsequently adopted as a "minor protector" of the Gelug, the newest of the schools of Tibetan Buddhism, headed by the Dalai Lamas (although nominally the Ganden Tripas).