South Tibet
Dorje Shugden, also known as Dolgyal, was a "gyalpo" "angry and vengeful spirit" of South Tibet, which was subsequently adopted as a "minor protector" of the Gelug school, the newest of the schools of Tibetan Buddhism, headed by the Dalai Lamas (although nominally the Ganden Tripas). Georges Dreyfus says "Shuk-den was nothing but a minor Ge-luk protector before the 1930s when Pa-bong-ka started to promote him aggressively as the main Ge-luk protector." Dreyfus states "the propitiation of Shukden as a Geluk protector is not an ancestral tradition, but a relatively recent invention of tradition associated with the revival movement within the Geluk spearheaded by Pabongkha."