The Saka of Aki province were descended from Môri Chikahira, head of the Môri in the early-middle 14th Century. The clan lost a fair amount of influence when Saka Nagato no kami Hirohide joined in a plot against Môri Motonari in 1523.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005