Mutō Ujihira

Mutō Ujihira was an early Kamakura-period warrior of Fujiwara descent, a son of Mutō Yorihira and the founding head of the family that later became the Daihōji of Dewa Province. As jitō of Ōizumi manor in the Shōnai region, he took the family name Ōizumi.

In 1209 the monk-soldiers of Mount Haguro brought suit against him for encroaching on the mountain temple's estates. His successors later settled at Daihōji Castle, the center of the manor, and renamed the clan Daihōji.