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Tokugawa Nobuyasu


Matsudaira Nobuyasu (松平 信康?, 13 April 1559 – 5 October 1579) was the eldest son of Tokugawa Ieyasu. His tsūshō ("common name") was Jirōsaburō (次郎三郎?). He was called also "Okazaki Saburō" (岡崎 三郎?), because he had become the lord of Okazaki Castle (岡崎城?) in 1570. Because he was a son of Tokugawa Ieyasu, he is often referred to, retroactively, as Tokugawa Nobuyasu (徳川 信康?).

Nobuyasu was Ieyasu's first son. His mother was Imagawa Yoshimoto's niece, Lady Tsukiyama.

As a child Nobuyasu was sent to the Imagawa capital of Sunpu, located in Suruga Province (modern-day Shizuoka Prefecture) as a hostage. Later he was named keeper of Okazaki Castle in Mikawa Province (modern-day Aichi Prefecture), the birthplace of his father, and took part in the Battle of Nagashino in 1575.


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