Sōma Shigetane

Sōma Shigetane was the sixth head of the Mutsu Sōma line and its effective founder in Mutsu. Repeatedly worsted in land disputes with the main Sōma line, in 1323 he led eighty-odd mounted followers north to Namekata District, where he built Odaka Castle and extended his holdings along the Ota River.

After the Kamakura shogunate fell in 1333 he joined the Kenmu Restoration, then sided with Ashikaga Takauji. He died in 1336 defending Kamakura against Kitabatake Akiie's Southern Court army.