In the course of time the Oshu Fujiwara clan and the Taira clan regime appeared from the leaders of samurai families, eventually forming the Kamakura bakufu (also known as Shogunate, a Japanese feudal government headed by a Shogun) at the end of the 12th century.
これら武家の棟梁のなかから、やがて奥州藤原氏、平氏政権が生まれ、12世紀末葉には鎌倉幕府の成立をみた。