Matsudaira Tadayoshi (松平 忠吉, 18 October 1580 – 1 April 1607) was the fourth son of Tokugawa Ieyasu with his concubine Saigo-no-Tsubone. His Childhood name was Fukumatsumaru (福松丸).
Early life
When his mother died, he and his brother were adopted by Acha no Tsubone (1555-1637). His full brother, Tokugawa Hidetada, was the second shōgun.
At the Battle of Sekigahara, he was attended by Ii Naomasa and was therefore at the forefront of the fighting. In the midst of the battle, he was shot by an Ishida gunner, but survived with a bullet wound. He was given Kiyosue Domain afterwards and remained there until his death at 1607. He was buried in Shinnyo-ji in Kakegawa.
