Lifespan: Tenbun 11 (1542) to 8/30 of Genna 2 (1616)
Other Names: Hyōemon
Rank: bushō, hatamoto
Bakufu: Edo – hatamoto
Lord: Oda Nobunaga → Tokugawa Ieyasu → Tokugawa Hidetada
Father: Kusakabe Sadakane
Wife: [Formal] Daughter of Nishimura Hisayoshi
Children: Muneyoshi, Sadakatsu, Masafuyu, Hayakawa Yoshikatsu, Kagehisa, daughter (wife of a member of the Mamiya clan), daughter (wife of Toshima Tadatsugu)
Kusakabe Sadayoshi served as a bushō and hatamoto from the Sengoku to early Edo periods.
In 1542, Sadayoshi was born as the son of Kusakabe Sadakane.
He served Oda Nobunaga, but, after a quarrel with a fellow retainer, Hashiba Hideyoshi, Sadayoshi absconded from the clan. Later, he entered into service for Tokugawa Ieyasu. Together with Naruse Masakazu, he participated in the Battle of Nagashino and the Siege of Takatenjin Castle. After Ieyasu garnered control of Kai Province, Sadayoshi was appointed as a magistrate. Following Ieyasu’s transfer to the Kantō, Sadayoshi served as an official at Hachigata Castle in Musashi Province.
In 1600, at the Battle of Sekigahara, Sadayoshi served as a hatabugyō, or individual responsible for managing the war banners. Later, he was assigned to stand guard at Fushimi Castle. In 1616, he died in this location.
Throughout his life, Sadayoshi maintained ties with Naruse Masakazu.