Mugaku Sogen ［無学祖元］ (1226–1286) (; Chin Wu-hsüeh Tsu-yüan): A priest of the Rinzai (Chin Lin-chi) school of Zen from China, who went to live in Japan. At age thirteen, he entered the priesthood at Ching-tz’u-ssu temple. Soon afterward, in 1239, he visited Wu-chun Shih-fan, under whom he studied the Zen teachings. Thereafter he visited other Zen teachers to further his studies. In 1279 he went to Japan to propagate Zen at the invitation of Hōjō Tokimune, the eighth regent of the Kamakura shogunate. There he lived at Kenchō-ji temple in Kamakura with Tokimune’s support. In 1282, when Hōjō Tokimune built Engaku-ji temple in Kamakura, he invited Sogen to be the founding priest. Two years later, Sogen returned to Kenchō-ji temple where he died. He exerted great spiritual influence on the leaders and warriors of Kamakura.