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We cannot be sure as to the exact date when the great family's policy of boy-sovereigns first took definite shape, but the annals seem to show that Yoshifusa conceived the programme and that his adopted son, Mototsune, carried it out. A halo rests on Seiwa's head for the sake of his memorable descendants, the Minamoto chiefs, Yoritomo, Takauji, and Ieyasu.