Ōhira

The Ōhira were local lords based at Hasuike Castle in Takaoka district, Tosa. Their ancestor Kuninobu came from Sanuki and took the Ōhira name; the family ruled around Takaoka and Usa during the Muromachi period.

In 1467 the Ōhira helped the court noble Ichijō Norifusa reach Tosa from Sakai during the Ōnin War. His descendants established themselves in western Tosa, and the Tosa Ichijō destroyed the Ōhira in 1566.