was a top-ranking official in Japan's

Tokugawa shogunate The Tokugawa shogunate (, Japanese 徳川幕府 ''Tokugawa bakufu''), also known as the , was the military government of Japan during the Edo period from 1603 to 1868. Nussbaum, Louis-Frédéric. (2005)"''Tokugawa-jidai''"in ''Japan Encyclopedia ...

during its early decades, and one of the chief advisors to the second Tokugawa shōgun,

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 ...

. The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of

Mizuno Nobumoto was a daimyō of Japan's Sengoku period. He was a son of Mizuno Tadamasa, and brother of Mizuno Tadashige. He is Tokugawa Ieyasu's uncle through Matsudaira Hirotada's marriage to his sister, Odai no Kata. In 1542, Nobumoto sided with Oda Nobuhid ...

, though there are some who claim he was an illegitimate son of shōgun

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 ...

. 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 The Ayutthaya Kingdom (; th, อยุธยา, , IAST: or , ) was a Siamese kingdom that existed in Southeast Asia from 1351 to 1767, centered around the city of Ayutthaya, in Siam, or present-day Thailand. The Ayutthaya Kingdom is consid ...

. 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 ''Tairō'' (, "great elder") was a high-ranking official position in the Tokugawa shogunate government of Japan, roughly comparable to the office of prime minister. The ''tairō'' presided over the governing ''rōjū'' council in the event of an e ...

'' (Great Elder), and was made ''

daimyō were powerful Japanese magnates, feudal lords who, from the 10th century to the early Meiji era, Meiji period in the middle 19th century, ruled most of Japan from their vast, hereditary land holdings. They were subordinate to the shogun and n ...

'' (feudal lord) of

Koga Domain alt=, Site of Koga Castle, administrative headquarters of Koga Domain was a feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in Shimōsa Province, Honshū. The domain was centered at Koga Castle, located in what is ...

Shimōsa Province was a province of Japan in the area modern Chiba Prefecture, and Ibaraki Prefecture. Nussbaum, Louis-Frédéric. (2005). "''Shimōsa''" in . It lies to the north of the Bōsō Peninsula (房総半島), whose name takes its first ''kanji'' from ...

, with a revenue of 160,000 ''

koku The is a Chinese-based Japanese unit of volume. 1 koku is equivalent to 10 or approximately , or about . It converts, in turn, to 100 shō and 1000 gō. One ''gō'' is the volume of the "rice cup", the plastic measuring cup that is supplied ...

''.

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.

References

References

See also