Matsudaira Tadayoshi

Matsudaira Tadayoshi (松平 忠吉; c. 1580 – 1607) was a Japanese military commander and feudal lord during the early Edo period.^[1] He was the fourth son of Tokugawa Ieyasu with his concubine Saigo-no-Tsubone. His childhood name was Fukumatsumaru (福松丸).

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.^{[citation needed]}

Tadayoshi was adopted by Matsudaira Ietada and succeeded him as the second lord of Oshi Domain.

In 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.^{[citation needed]}

Tadayoshi became lord of Kiyosu Castle, the most important fortification in Owari, where he was given 52-thousand koku.^[2]

His wife was the daughter of Ii Naomasa.^[3] Tadayoshi died in 1607 without having produced a son.^[4][2]

Three of his retainers committed junshi following his death.^[4] The events surrounding his death including the suicide of his followers are reported in Kenmotsu sōshi (監物草子) written in the Kan'ei era.^[5]

He was buried in Shinnyo-ji in Kakegawa.^{[citation needed]}

• Father: Tokugawa Ieyasu
• Mother: Saigō-no-Tsubone
• Adopted Father: Matsudaira Ietada (Fukozu)
• Wife: Ii Masako
• Child: 1