Lifespan: 12/18 of Kanei 11 (1636) to 12/21 of Hōei 5 (1708)
Titles: Junior Fourth Rank (Lower), Master of the Palace Table, Chamberlain, Governor of Tōtōmi
Lord: Tokugawa Ietsuna → Tokugawa Tsunayoshi
Father: Date Hidemune
Mother: From the Yoshii clan
Siblings: Munezane, Munetoki, Munetoshi, Kiku, Ban, Tsurumatsu, Koori Muneshige, Munezumi, Tokumatsu, Munemoto, Takematsu, Matsu, Iwamatsu, Kiyo, Munenori
Wife: Daughter of Sakai Tadakatsu of the Okuyama clan
Children: Kojirō, Muneyasu, daughter (wife of Ikeda Yoshimichi), daughter (wife of Kyōgoku 高令)
Date Munetoshi served as a daimyō during the early part of the Edo period. He was the second head of the Uwajima domain in Iyo Province, and carried the title of Junior Fourth Rank (Lower), Master of the Palace Table, Chamberlain, and Governor of Tōtōmi.
Munetoshi was born in 1635 as the third son of Date Hidemune, the first head of the Uwajima domain. His coming-of-age ceremony was held early in 1639. His eldest brother, Munezane, was in ill health, so relinquished his role as the designated successor to the family. Meanwhile, his second oldest brother, Munetoki, preceded Hidemune in death.
Hidemune retired in the summer of 1657, whereupon his fief was divided between the Uwajima-Date and Yoshida-Date branches of the family. Munetoshi became the second head of the Uwajima domain with an allocation of 70,000 koku, while his younger brother, Date Munezumi, became head of the neighboring Yoshida domain with an allocation of 30,000 koku.
Beginning in 1670, Munetoshi appointed Yasoshima Chikataka to serve as the official in charge of land surveys, and established a bureaucracy and land survey system. In 1688, Munetoshi further strengthened the finances of the domain by implementing domain-controlled monopolies over production and distribution. Nevertheless, expenses associated with activities including construction of the Hama Residence that served as his quarters and major renovations to Uwajima Castle imposed a burden on clan finances.
In 1671, owing to turmoil within the main branch of the Date domain in Sendai in an event known as the Date Disturbance, Munetoshi took custody of certain individuals deemed criminals who were ousted from the Sendai branch, such as Imamura Zendaiyū. In 1681, Munetoshi served as an intermediary with the bakufu and the Matsudaira family of the Echigo-Takada domain to resolve issues arising from the involvement of Munetoshi’s father-in-law, Matsudaira Mitsunaga, in the Echigo Disturbance.
Late in 1693, Munetoshi transferred control of the domain to an adopted heir, his son-in-law named Date Muneyoshi, and retired. He died in 1708 at the age of seventy-five.