Matsudaira Hirotada(1526-1549) (松平広忠) was the lord of Okazaki Castle (岡崎城) in Mikawa province (三河国). Son of Matsudaira Kiyoyasu (7th head of Mikawa Matsudaira clan) and an unknown lady, prob. the daughter of Aoki Kaga no Kami Norimune. Known in his childhood as Senshoumaru, Senchiyo, and Jirouzaburou. Father of the legendary Tokugawa Ieyasu (徳川家康).