Drogon Chogyal Phakpa (Lodro Gyaltsen) (1235–1280) was the seventh Sakya Trizin and fifth of the five founding masters of the Sakya order. Although his religious name is Lodro Gyaltsen, he is better known by his title, Drogon Chogyal Phakpa. Chogyal Phakpa was Sakya Pandita’s primary disciple, religious heir, and paternal nephew. He accompanied Sakya Pandita on his travels to the Mongol Court and participated in his activities there. He was at Sakya Pandita’s side to witness the miraculous nature of the great master’s passing into parinirvana, described in vivid detail in his biography. Shortly thereafter, at the age of only nineteen, Chogyal Phakpa so impressed Emperor Kublai Khan that the khan designated him his personal religious master with the title of tishri, and gave him religious and secular authority over the three provinces of Tibet.

Gorampa Sonam Senge (1429–1489) was a great Sakyapa scholar, philosopher, and prolific author. He wrote an impressive number of important commentaries on both sutra and tantra, including the Middle Way, the Perfection of Wisdom, logic, Abhidharma, and the Vinaya. His explications of the Sakyapa view and rebuttals of its challengers still form the core of philosophical studies in Sakyapa and other monastic colleges today. The biography of Sakya Pandita translated here appears in the introductory matter he wrote as a preface to his famous work Classification of the Three Vows.

Jamgon Ameshab (Ngawang Kunga Sonam) (1597–1659) was the twenty-seventh Sakya Trizin. Although his religious name is Ngawang Kunga Sonam, he is better known by the respectful epithet Jamgon Ameshab due to his calm and dignified manner. Intensively trained in religious studies from childhood, he became throne holder of the Sakya order at the age of twenty-four. A prolific author of over thirty-five volumes of religious texts, he also played an important role as a peacekeeper and mediator between the various warring states and factions of his time.