However, the Minamoto clan Shogun died out for the reasons; there was no descendant from the main line of the Minamoto clan apart from MINAMOTO no Sanetomo who succeeded Kamakura-dono; Sanetomo had no children.
しかし、鎌倉殿の後継であった源実朝の他に源頼朝直系の源氏嫡流の子孫がいないことや、実朝自身に子がないことから源氏将軍が絶えた。