Lifespan: Unknown to 2/25 of Tenbun 22 (1553)
Other Names: [Common] Koroku, Korokurō, Kurōdo, Hikoemon
Father: Hachisuka Masanari
Siblings: Masatada, Masatoshi, Sanemichi
Wife: [Formal] Unknown, [Second] Daughter of Ōhashi Sadahiro, [Consort] Unknown (mother of Masakatsu), [Consort] Yasui-gozen (daughter of Yasui Shigeyuki)
Children: Masakatsu, Matajūrō, Masanobu, Sumi (wife of Oda Kishichirō), Masamoto, daughter (wife of Kajiura Masanori)
Hachisuka Masatoshi served as a bushō during the Sengoku period. He was a powerful kokujin, or provincial landowner, in Owari Province.
Based on genealogical records, the Hachisuka clan were a branch of the Shiba clan descended from the Seiwa Genji. The Hachisuka obeyed Shiba Yoshishige (the military governor of Owari) and entered the province. For generations, the family held land in the village of Hachisuka in the Kaitō District. Hachisuka Masanaga, the lord of Hachisuka Castle in the same village, was Masatoshi’s grandfather while Masanari was Masanaga’s second son.
Masatoshi was born as the second son of Hachisuka Masanari.
Masanari served the family of the military governors of Owari. Owing to turbulence, the family split. His eldest son, Masatada, went to serve Oda Nobuhide or else to Mikawa Province. In later years, Masatada’s son, Masatoki, served Matsudaira Ieyasu and became a yoriki, or security officer, for Honda Tadakatsu.
Masatoshi’s son was Hachisuka Masakatsu. Masakatsu was a retainer of Toyotomi Hideyoshi (Hashiba Hideyoshi), serving as his righthand man and attaining the status of a daimyō. He also served as the lord of Tatsuno Castle in Harima Province and was the founder of the Hachisuka family of the Awa-Tokushima domain.
Masatoshi maintained a fief of 100 kan in Hachisuka and was a lower-ranking official in northern Owari. Originally, he had the surname of Hamatsu. Next, he used the surname of Saitō and finally, after acquiring a fief of 200 kan in the village of Hachisuka, adopted the surname of Hachisuka.
After the fall of the Shiba clan, Masatoshi’s family served Saitō Dōsan, the sengoku daimyō of Mino Province.
According to one account, the father of Toyotomi Hideyoshi, Kinoshita Yaemon, served Masatoshi and, through this connection, Hideyoshi served Masatoshi’s son, Hachisuka Masakatsu, in his youth.