Minamoto no Tsunemoto
Minamoto no Tsunemoto (894–961) was a Heian-period warrior and founder of the Seiwa Genji line of the Minamoto clan. A son of Prince Sadazumi and grandson of Emperor Seiwa, he became vice-governor of Musashi Province in 938.
After a clash with local magnates he fled to Kyoto and accused Taira no Masakado of plotting revolt; when Masakado rose in 939–940, Tsunemoto was sent against him but returned on learning he had already been defeated. His son was Mitsunaka.