abstract:, also known as or , was the second son of the second Kamakura shogun of Japan, Minamoto no Yoriie.Yasuda (1990-156) At the age of six, after his father was killed in Shuzenji in Izu, he became his uncle Sanetomo's adopted son and, thanks to his grandmother Hōjō Masako's intercession, a disciple of Songyō, Tsurugaoka Hachiman-gū's bettō (head priest).