Hisatake Chikanobu

久武親信

Clan

Bushō

Tosa Province

Lifespan:  15xx to 5/21 of Tenshō 7 (1579)

Rank:  bushō

Clan:  Hisatake

Lord:  Chōsokabe Motochika

Father:  Hisatake Masamoto

Siblings:  Chikanobu, Chikanao

Hisatake Chikanobu served as a bushō during the Azuchi-Momoyama period.  He was a retainer of the Chōsokabe clan of Tosa Province.

Chikanobu was born as the eldest son of Hisatake Masamoto.  His younger brother was Hisatake Chikanao.

Chikanobu and Chikanao served Chōsokabe Motochika, the sengoku daimyō and twenty-first head of the Chōsokabe clan of Tosa.  Owing to his upright character, Chikanobu performed important roles for Motochika and was assigned to Sakawa Castle in the Takaoka District of Tosa.

In 1577, Chikanobu served as the commander-in-chief (representative of his lord in battle) to lead an army into the southern part of Iyo Province, subduing the Kawarasaki clan.  In 1579, however, during an attack on Okamoto Castle in the Uwa District of Iyo, he was killed in a surprise attack by Doi Kiyoyoshi who was guarding the castle.

Chikanobu once met with Hashiba Hideyoshi at Arima onsen, or hot springs, in Settsu Province.  He was said to have realized Hideyoshi’s abilities at this time.

Chikanobu maintained reservations in regard to his younger brother, Chikanao.  Just before his death in battle during the assault on Okamoto Castle, Chikanobu informed his lord, Motochika, that his brother, Hikoshichi (Chikanao) had a dark spirit and should not be elevated.  These concerns were in fact justified.  Chikanao engaged in repeated slander, leading to the purge of his rivals including Kira Chikazane.  After Chōsokabe Morichika (Motochika’s fourth son) inherited the family, Chikanao operated behind the scenes, complicit in the murder of Morichika’s third brother, Tsuno Chikatada.

After the Battle of Sekigahara in the ninth month of 1600, Chikanao contributed to the removal by Tokugawa Ieyasu of the Chōsokabe from their position and the eventual demise of the family.