Minamoto no Yoritomo (源 頼朝, May 9, 1147 – February 9, 1199) was the founder and the first shogun of the Kamakura shogunate and of Japan, ruling from 1192 until 1199, also the first ruling shogun in the history of Japan. He was the husband of Hōjō Masako who acted as regent (shikken) after his death.