- Died: 1543
- Sons: Mizuno Nobutomo, Mizuno Tadashige, Mizuno Tadamori
- Distinction: Matsudaira retainer
Tadamasa was the son of Mizuno Kiyotada (also known as Mizuno Nobumasa) and held Kariya Castle. His daughter became Matsudaira Hirotada's wife, which made Tadamasa a grandfather to Tokugawa Ieyasu.
References
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005