|Preceded by||Tokugawa Ienari|
|Succeeded by||Tokugawa Iesada|
|Born||22 June 1793|
|Died||27 July 1853(aged 60)|
Ieyoshi was born as the second son of the 11th shogun, Tokugawa Ienari and named Teijiro (敏次郎). Teijiro was appointed heir on the death of his elder brother, Takechiyo. He became shogun on September 2, 1837, at the age of 45 upon the retirement of his father, Tokugawa Ienari. However, Ienari continued to wield much power from behind the throne, and it was not until after his death in 1841 that Senior Rōjū Mizuno Tadakuni was able to purge the government of his clique, and to implement measures to overhaul the shogunate’s finances and controls in the aftermath of the Great Tenpō Famine of 1832–36.
Known as the Tenpō Reforms, these numerous sumptuary laws attempted to stabilize the economy through a return to the frugality, simplicity and discipline that were characteristic of the early Edo period, by banning most forms of entertainment and displays of wealth. The restrictions proved extremely unpopular with the commoners.
Another part of the Reform included the Agechi-rei of 1843, which was to have daimyō in the vicinity of Edo and Ōsaka surrender their holdings for equal amounts of land elsewhere, thereby consolidating Tokugawa control over these strategically vital areas. However, this was also greatly unpopular amongst daimyō of all ranks and income levels. To complicate the situation further, in May 1844, Edo Castle burned down, and Mizuno Tadakuni was forced into exile and retirement. Mizuno was replaced by Doi Yoshitsura, Abe Masahiro and Tsutsui Masanori as rōjū. He forced the retirement of Tokugawa Nariaki in 1844 and placed Nariaki’s seventh son, Tokugawa Yoshinobu as head of the Hitotsubashi-Tokugawa house in 1847. He also forced the retirement of Shimazu Narioki in 1851.
US Commodore Matthew Perry arrived on June 3, 1853, on a mission to force a treaty opening Japan to trade. Ieyoshi died on June 22, 1853, before the treaty could be concluded, of heart failure possibly brought on by heat stroke, and was succeeded by his third son Tokugawa Iesada. The following year the Tokugawa shogunate was forced to accept the American demands by signing the Convention of Kanagawa.
Ieyoshi's official wife was Princess Takako (1795–1840), the sixth daughter of Prince Arisugawa Orihito. She relocated to Edo Castle in 1804 when she was only age 10, and they were formally wed in 1810. In 1813, she gave birth to a son, Takechiyo, followed by a daughter in 1815 and in 1816. In addition, Ieyoshi had another 13 sons and 11 daughters by numerous concubines; however, only one son, Tokugawa Iesada, lived past the age of 20.
- Father: Tokugawa Ienari
- Mother: Oraku no Kata (d.1810) later Korin'in
- Wife: Arisugawa Takako (1795–1840) later Jokan-in
- Ohana no Kata (d. 1844)
- Okane no Kata (d. 1843) later Mi-ko-in
- Ofude no Kata (d. 1844) later Shumyo-in
- Omitsu no Kata (1807–1885) later Hojuin
- Okoto no Kata (d. 1855) later Myoon'in
- Otsuyu no Kata (d. 1888) later Shugetsuin
- Okaju no Kata (1803–1826) later Myoka-in
- Ohisa no Kata (d. 1847) later Seiryo-in
- Takechiyo (1813–1814) born by Takako
- Tatsuhime (1814–1818) by Okaju
- Tomohime (1815-1815) born by Takako
- Saigen-in (1816-1816) born by Takako
- Yochiyo (1819–1820) by Ohisa
- Entsuin (1822-1822) by Okaju
- Tokugawa Iesada born by Omitsu
- Maihime (1824–1829) born by Ohana
- Tokugawa Yoshimasa (1825–1838) of Hitotsubashi-Tokugawa Family born by Ohisa
- Teruhime (1826–1840) married Tokugawa Yoshiyori and later known as Teimei-in born by Ohisa
- Hanhime (1826-1826) by Okaju
- Tokugawa Harunojo (1826–1827) by Omitsu
- Tokugawa Atsugoro (1828–1829) by Omitsu
- Tokugawa Jikimaru (1829–1830) by Ofude
- Tokugawa Ginnojo (1832–1833) by Ofude
- Satohime (1833–1834) by Okane
- Chiehime (1835–1836) by Ofude
- Yoshihime (1836–1837) by Okane
- Tokugawa Kamegoro (1838–1839) by Ofude
- Maijihime (1839–1840) by Okane
- Wakahime (1842–1843) by Okane
- Shoyo-in (1843-1843) by Okane
- Okuhime (1844–1845) by Okoto
- Tokugawa Tadashimaru (1845–1846) by Okoto
- Shikihime (1848-1848) by Okoto
- Sashin-in (1849-1849) by Otsuyu
- Tokugawa Choyoshiro (1852–1853) by Okoto
- Adopted daughters:
Events of Ieyoshi's bakufu
- 1837 (Tenpō 7): Tokugawa Ieyoshi becomes the 12th shogun of the bakufu government.
- 1845 (Kōka 1): Era name changed due to fire which destroyed Edo Castle
- 1847 (Kōka 4): Zenkoji earthquake causes major damage in Shinano Province and surrounding areas
- 1853 (Kaei 1): Kōmei becomes 121st Emperor of Japan.
- 1853 (Kaei 6): Arrival of U.S. Commodore Matthew C. Perry and his fleet of Black Ships.
Eras of Ieyoshi's bakufu
In popular culture
Tokugawa Ieyoshi is a minor character in Stephen Sondheim's musical "Pacific Overtures", although he is not named. In a departure from history, the musical depicts him being murdered by his mother for political reasons, using poisoned chrysanthemum tea.
- Hall, John Whitney et al. (1991). Early Modern Japan, p. 21.
- Bolitho, Harold. (1974). Treasures Among Men: The Fudai Daimyo in Tokugawa Japan. New Haven: Yale University Press. ISBN 978-0-300-01655-0; OCLC 185685588
- Hall, John Whitney and Marius Jansen. (1991). Early Modern Japan: The Cambridge History of Japan. Cambridge: Cambridge University Press. ISBN 978-0-521-22355-3; OCLC 62064695
- Screech, Timon. (2006). Secret Memoirs of the Shoguns: Isaac Titsingh and Japan, 1779–1822. London: RoutledgeCurzon. ISBN 978-0-7007-1720-0
- Totman, Conrad. (1967). Politics in the Tokugawa bakufu, 1600–1843. Cambridge: Harvard University Press. OCLC 279623
- National Archives of Japan: Illustrations of Road to Nikko, Tempo 14 (1843)
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