Named for Minamoto Yoritomo (1147–1199), the first shogun and founder of the Japanese feudal system. In his boyhood, Yoritomo was confined under the Heike’s surveillance for 20 years in a place of exile near the residence of the second discoverer of this asteroid. Yoritomo destroyed the Heike with his brother’s {Yoshitsune, see planet  (3178)} help and became the first supreme commander of Japan in 1192, marking the beginning of the Kamakura era. (M 19693) _ _.