Kōjō ［光定］ (779–858): A priest of the Tendai school and a native of Iyo Province in Japan. In 808 he went to Enryaku-ji, the head temple of the Tendai school on Mount Hiei, and became Dengyō’s disciple. In 812 he received the precepts at Tōdai-ji temple and learned the teachings of the Womb Realm and the Diamond Realm from Kōbō, founder of the Japanese True Word (Shingon) school, in a ceremony performed at Takaosan-ji temple. He exerted himself to help realize his teacher’s desire to establish a Mahayana ordination center on Mount Hiei. Imperial permission for construction was finally granted seven days after Dengyō’s death in 822. In 854 Kōjō became the superintendent of Enryaku-ji temple. He wrote The Record of the Precepts of the One Mind, an account of the efforts that led to the establishment of a Mahayana ordination center that is regarded as the primary history of those events.