was the fourth son of

Tokugawa Ieyasu was the founder and first ''shōgun'' of the Tokugawa Shogunate of Japan, which ruled Japan from 1603 until the Meiji Restoration in 1868. He was one of the three "Great Unifiers" of Japan, along with his former lord Oda Nobunaga and fellow ...

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'' of the Tokugawa dynasty, who ruled from 1605 until his abdication in 1623. He was the third son of Tokugawa Ieyasu, the first ''shōgun'' of the Tokugawa shogunate. Early life (1579–1593) Tokugawa Hidetada was bo ...

, was the second shōgun. Later, Tadayoshi was adopted by Matsudaira Ietada and succeeded him as the second lord of

Oshi Domain was a feudal domain under the Tokugawa shogunate of Edo period Japan, located in Musashi Province (modern-day Saitama Prefecture), Japan. It was centered on Oshi Castle in what is now part of the city of Gyōda, Saitama. History Oshi Castle was ...

. At the

Battle of Sekigahara The Battle of Sekigahara (Shinjitai: ; Kyūjitai: , Hepburn romanization: ''Sekigahara no Tatakai'') was a decisive battle on October 21, 1600 (Keichō 5, 15th day of the 9th month) in what is now Gifu prefecture, Japan, at the end of ...

, he was attended by

Ii Naomasa was a general under the Sengoku period ''daimyō'', and later ''shōgun'', Tokugawa Ieyasu.Kiyosue Domain The was a Japanese domain of the Edo period, located in Nagato Province. It was ruled for the entirety of its history by a branch of the Mōri clan of the neighboring Chōshū Domain. List of lords *Mōri clan ( Tozama; 10,000 koku The is a ...

afterwards and remained there until his death at 1607. He was buried in Shinnyo-ji in Kakegawa.

Family

* Father:

* Mother: Saigō-no-Tsubone * Adopted Father: Matsudaira Ietada (Fukozu) * Wife: Ii Masako * Child: Umesada dai doji

References

1580 births 1607 deaths Tokugawa clan {{Japan-bio-stub