Sōma Morotsune

Sōma Morotsune (1139?–1205) was a son of Chiba Tsunetane and the first head of the Sōma house. With his father he joined Minamoto no Yoritomo's rising of 1180 and campaigned under Yoritomo's brother Noriyori; his service in the 1189 Ōshū campaign is said to have earned him a banner of Hachiman Daibosatsu from Yoritomo.

When Tsunetane died in 1201 he took Buddhist orders and passed leadership to his son Yoshitane. He is said to have died seated at his Kamakura mansion in 1205 while chanting the nenbutsu.