The allied activities and a group that shared same fate differed from the political marriage of the Sengoku Daimyo (daimyo of the Warring States Period) the maternal relatives of Miura clan from mobilization call of Yoritomo to its fall in Battle of Hoji could be seen.
三浦氏の頼朝挙兵から宝治合戦での滅亡までの間の外戚についても、戦国大名の政略結婚とはまた違った、婚姻関係による共同行動、運命共同体がよく見てとれる。