In 1185, his forces, commanded by his younger brother Minamoto no Yoshitsune, vanquished the Taira and in 1192 he received from Emperor Go-Toba the title of "Sei-i Taishōgun". Yoshitsune's power would however cause Yoritomo's envy; the relationship between the brothers soured, and in 1189 Yoritomo was given Yoshitsune's head pickled in liquor. For the same reason, in 1193 he had his other brother Noriyori killed. Power was now firmly in his hands, but the Minamoto dynasty and its power however were to end as quickly and unexpectedly as they had started.