Kōsokabe Chikayasu

Kōsokabe Chikayasu (香宗我部親泰, 1543 – 1593), third son of Chōsokabe Kunichika who was adopted by the Kōsokabe Clan in 1558 was a Japanese samurai of the Sengoku period, who served the Chōsokabe clan.[1] He was the castle lord in command of Aki Castle.[2][3] Throughout Chikayasu's life, he led many an army throughout his older brother Motochika's campaigns in Shikoku and contributing to the expansion of the domain of the Chōsokabe clan.[1]

Kōsokabe Chikayasu 香宗我部親泰
Born	1543 Okō Castle, Tosa Province
Died	1593 (aged 49–50) Nagato Province
Allegiance	Chosokabe clan Toyotomi clan
Unit	Chosokabe clan
Commands held	Aki castle
Battles/wars	Battle of Yanagare Battle of Nakatomigawa Invasion of Shikoku Korean Campaign
Relations	Chōsokabe Kunichika (father) Kōsokabe Chikahide (adopted father) Chōsokabe Motochika (Older brother)

Biography

Chikayasu was the third son of Chosokabe Kunichika and a younger brother of Chosokabe Motochika. He was adopted by Kosokabe Chikahide in 1558 and following the defeat of the Aki family in 1569 was given Aki castle. He went on to serve Motochika loyally throughout his career. He played a notable role in the Chosokabe victory at the Battle of Nakatomigawa in 1582 and captured Tsu castle, afterwards being given Tomioka castle in Awa province. He was known as a diplomat as well as soldier, and worked at arranging a Chosokabe-Oda alliance. He sent messages to Oda Nobuo and Tokugawa Ieyasu when the latter two were facing Toyotomi Hideyoshi in 1584. After these endeavors, his talents became widely known. He died of illness in Nagato province en route to join the Korean Campaign in 1593. His eldest son Chikauji had also died of illness the previous year. A younger son, Sadachika, left Tosa province following the Sekigahara Campaign and settled in Shimôsa province.

References

1. "香宗我部親泰" (in Japanese). 戦国武将列伝. Retrieved 25 July 2019.
2. "香宗我部親泰 元親の実弟・戦国土佐の外交役、遺品で紹介　具足など９件" (in Japanese). 毎日新聞. Retrieved 25 July 2019.
3. 川口素生編 『戦国名物家臣列伝』 学習研究社 P.133