Minamoto no Sanetomo was the third shōgun of the Kamakura shogunate. He was the second son of the Kamakura shogunate founder, Minamoto no Yoritomo. His mother was Hōjō Masako and his older brother was the second Kamakura shogun Minamoto no Yoriie.... Wikipedia
Born: September 17, 1192, Kamakura, Kanagawa, Japan
Assassinated: February 13, 1219, Tsurugaoka Hachimangu, Kamakura, Kanagawa, Japan
Great-grandparents: Minamoto no Tameyoshi and Fujiwara no Suenori
Parents: Minamoto no Yoritomo and Hōjō Masako
Spouse: Bōmon Nobuko (m. ?–1219)
Siblings: Minamoto no Yoriie
Children: Kugyō