Mizuno Tadakuni

Quick Facts: Who was Mizuno Tadakuni?

Subject:

Mizuno Tadakuni

Known for:

Late Edo period daimyō known for instituting the controversial Tenpō Reforms.

Born:

1794-07-19

Died:

1851-03-12

Century / Era:

1794s Historical Era Archive

Verified Source:

2Day Chrono-Wiki & Primary Historical Archives

Origins & Early Life

Mizuno Tadakuni (水野 忠邦; July 19, 1794 – March 12, 1851) was a daimyō during late-Edo period Japan, who later served as chief senior councilor (Rōjū) in service to the Tokugawa shogunate. He is remembered for having instituted the Tenpō Reforms. Mizuno Tadakuni was the second son of Mizuno Tadaaki, the daimyō of Karatsu Domain. As his elder brother died at an early age, Tadakuni became heir in 1805 and was presented to shōgun Tokugawa Ienari and future shōgun Tokugawa Ieyoshi in a formal audience in 1807. In 1812, on the retirement of his father, he became head of the Mizuno clan and daimyō of Karatsu.

Career & Major Achievements

He entered the service of the Tokugawa shogunate as a Sōshaban (Master of Ceremonies) at Edo Castle in 1816. However, faced with increasing difficulties over the policing of the foreign trade port of Nagasaki, in 1817, Tadakuni petitioned to be transferred from the Karatsu Domain to the much smaller Hamamatsu Domain in Tōtōmi Province. Although both domains were ranked officially at 70,000 koku, Karatsu Domain had an effective income of 253,000 koku as opposed to only 153,000 koku for Hamamatsu. As a consequence, this transfer was met with outrage and disbelief by his senior retainers, resulting in the seppuku of his senior advisor, but Tadakuni would not be dissuaded. The same year, within the shogunal administration, he received the post of Jisha-bugyō (Commissioner of Shrine and Temples).

Enduring Legacy & Impact

In 1825, Tadakuni received the post of Osaka-jō dai (Castellan of Osaka), with a promotion to Lower 4th Court Rank. The following year (1826), he became Kyoto Shoshidai, the shogunate's official representative to the Court in Kyoto. His courtesy title was changed from Izumi-no-kami to Echizen-no-kami. In 1828, Tadakuni became a Rōju. He steadily rose through the ranks of the Rōjū to become Senior Rōjū in 1839.

Chronological Milestones & Life Events

1. 1794 (1794-07-19): Birth of Mizuno Tadakuni — Late Edo period daimyō known for instituting the controversial Tenpō Reforms.
2. 1805: 1805 Milestone — As his elder brother died at an early age, Tadakuni became heir in 1805 and was presented to shōgun Tokugawa Ienari and future shōgun Tokugawa Ieyoshi in a formal audience in 1807.
3. 1812: 1812 Milestone — In 1812, on the retirement of his father, he became head of the Mizuno clan and daimyō of Karatsu.
4. 1816: 1816 Milestone — He entered the service of the Tokugawa shogunate as a Sōshaban (Master of Ceremonies) at Edo Castle in 1816.
5. 1817: 1817 Milestone — However, faced with increasing difficulties over the policing of the foreign trade port of Nagasaki, in 1817, Tadakuni petitioned to be transferred from the Karatsu Domain to the much smaller Hamamatsu Domain in Tōtōmi Province.
6. 1825: 1825 Milestone — In 1825, Tadakuni received the post of Osaka-jō dai (Castellan of Osaka), with a promotion to Lower 4th Court Rank.
7. 1826: 1826 Milestone — The following year (1826), he became Kyoto Shoshidai, the shogunate's official representative to the Court in Kyoto.
8. 1839: 1839 Milestone — He steadily rose through the ranks of the Rōjū to become Senior Rōjū in 1839.
9. 1851 (1851-03-12): Passing & Historical Legacy — Mizuno Tadakuni passed away on 1851-03-12, leaving an enduring historical legacy.

Historical Fact-Check Quiz: Mizuno Tadakuni

True or False: “The primary reason Mizuno Tadakuni was forced to transfer from his powerful Karatsu Domain was due to a desire for greater administrative control over foreign trade.”

Answer (FALSE ❌): He petitioned the transfer because the policing of Nagasaki presented increasing difficulties, not solely for direct administrative control.

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Frequently Asked Questions about Mizuno Tadakuni