Twenty years later, in 1180, Yoritomo received Prince Mochihito's ryoji (orders issued by princes, empresses, etc) given to the Minamoto clan all over the country through MINAMOTO no Nakatsuna, the former Izu no kami (Governor of Izu Province) and a legitimate son of Yorimasa, and raised an army in Izu, a place of exile, to defeat the Taira clan.
それから20年後の治承4年（1180年）、以仁王が頼政の嫡子の「前伊豆守」源仲綱を通じて全国の源氏に発した令旨を奉じた頼朝は、流刑先の伊豆で平氏打倒の兵を挙げる。