Sadasumi-shinnō Japanese prince (0873–0916) Parents Seiwa Munesada princess Children Minamoto no Tsunemoto Minamoto no Tsuneshō Siblings Sadakazu-shinnō Yōzei Atsuko-naishinnō Sadayasu-shinnō Sadamoto-shinnō Shikishi-naishinnō Sadatoki-shinnō Minamoto no Nagakazu Sadakata-shinnō Sadahira-shinnō Minamoto Noriko Sadazane-shinnō Partners Daughter of Koretaka Shinnō, wife of Teijun Shinnō Minamoto Gara-ko