Tainoshō Koreyoshi


Tainoshō Clan


Tajima Province

Lifespan:  15xx to Tenshō 3 (1575)

Other Names:  Korekiyo

Rank:  bushō

Title:  General of the Left Division

Clan:  Tainoshō

Lord:  Yamana Suketoyo

Children:  Morinobu

Tainoshō Koreyoshi served as a bushō during the Sengoku and Azuchi-Momoyama periods.  He was a retainer of the Yamana clan and the lord of Tsuru Castle in Tajima Province.  Koreyoshi is counted among the Four Divine Kings of the Yamana.

Koreyoshi was an influential senior retainer of Yamana Suketoyo.   He built Tsuru Castle on Mount Atago to serve as his base and from which to expand his influence in Tajima.  After the Amago clan entered Tajima, he cooperated with them.  This owed to the fact that Koreyoshi was bitterly opposed to the Kakiya clan and had aims to annex the Mikumi District that was under the control of the Kakiya.

In 1569, after Hashiba Hideyoshi, a retainer of the Oda clan, invaded the territory of the Yamana clan, Koreyoshi’s lord, Suketoyo, submitted to the Oda.  The province of Tajima, however, was divided between one faction supporting the Oda and another supporting the Mōri.  After Koreyoshi made clear his support for the Oda faction, in 1570, he launched a surprise attack on Kakiya Tsugunari from the Mōri faction and killed him.  Thereafter, in 1575, Suketoyo betrayed the Oda and allied with the Mōri.  Tsugunari’s son, Kakiya Mitsunari, triggered the Battle of Noda during which Koreyoshi was compelled to take his own life at the Shōfuku Temple.