Doi Toshikatsu

In this Japanese name, the surname is Doi.

Doi Toshikatsu (土井 利勝, April 19, 1573 – August 12, 1644) was a top-ranking official in Japan's Tokugawa shogunate during its early decades, and one of the chief advisors to the second Tokugawa shōgun, Hidetada.^[1][2]

Doi Toshikatsu

The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobumoto, though there are some who claim he was an illegitimate son of shōgun Tokugawa Ieyasu. He served the shogunate as advisor to shōgun Tokugawa Hidetada for many years, and played an important role in communicating and overseeing the enforcement of shogunal policy across the country; Doi also helped effect trade and diplomatic relations between Japan and the Thai Kingdom of Ayutthaya. He lost much of his influence and power upon Hidetada's death in 1632. Six years later, Doi became one of the first to be appointed to the newly created post of Tairō (Great Elder), and was made daimyō (feudal lord) of Koga Domain in Shimōsa Province, with a revenue of 160,000 koku.^[1]

On April 7, 1633, he was transferred to Koga, Shimōsa Province, with an increased fief of 162,000 koku. In 1635, he revised the Buke shohatto law code by adding alternate attendance to the shogunate and increasing the number of articles to 19, solidifying the shogunate's system of control. Shortly after Iemitsu took power, Tokugawa Tadanaga and Kato Tadahiro were stripped of their titles. Toshikatsu, who had been secretly plotting with Iemitsu, pretended to be at odds with Iemitsu and sent letters to the various daimyo warning of rebellion. The other daimyo immediately submitted the letters to Iemitsu, but Tadahiro and Tadanaga did not, which is said to have led to their removal from the ranks.^[3]

References

1. "日本大百科全書(ニッポニカ)「土井利勝」の解説". kotobank. Retrieved 24 October 2021.
2. "徳川三百年の智臣 土井利勝". Koga Navi. Retrieved 24 October 2021.
3. Fujino Tamotsu (藤野保) (1985). 徳川幕閣 - 武功派と官僚派の抗争 [Tokugawa Shogunate - Conflict between military and bureaucratic factions] (in Japanese). 中央公論新社. p. 318. ISBN 9784121000880. Retrieved 5 July 2024.

References

• Frederic, Louis (2002). Japan Encyclopedia. Cambridge, Massachusetts: Harvard University Press.
• Khamchoo, Chaiwat and E. Bruce Reynolds (eds.) (1988). Thai–Japanese Relations in Historical Perspective. Bangkok: Innomedia Co, Ltd Press.
• Sansom, George (1963). A History of Japan: 1615–1867. Stanford, California: Stanford University Press.

See also

• Doi clan

Preceded by Matsudaira Tadatoshi	First Daimyō of Omigawa (Doi) 1602–1610	Succeeded by Andō Shigenobu
Preceded by Ogasawara Yoshitsugu	First Daimyō of Sakura (Doi) 1610–1633	Succeeded by Ishikawa Tadafusa
Preceded by Nagai Naomasa	First Daimyō of Koga (Doi) 1633–1644	Succeeded by Doi Toshitaka