Ōhira

The Ōhira were a warrior house of Tosa on Shikoku, based at Hasuike Castle. They claimed descent from Fujiwara no Hidesato through Kondo Kunihira, who was rewarded with the governorship of Sanuki for service in the Genpei War; Kunihira's son Kuninobu moved to Tosa, took the name Ōhira and held Hasuike as jitō.

In the Muromachi period the Ōhira governed Tosa as deputy governors for the Hosokawa and grew rich on trade between Usa and Sakai. In 1467 they hosted the regent Ichijō Norifusa when he fled to Tosa.

In 1508 they joined the Motoyama in overthrowing Chōsokabe Kanetsugu, but as the Hosokawa split, Ōhira influence waned. They lost Hasuike Castle to the Ichijō in 1546, and in 1566, caught between the Ichijō and the Motoyama, the last lord Kunioki killed himself at Tonami and the Tosa Ōhira came to an end.