Doi Toshikatsu (土井利勝)(1573-1644) was a top-ranking official in Japan's Tokugawa shogunate during its early decades, and one of the chief advisors to the second Tokugawa shogun, Hidetada. Year 1573 was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. ... // Events February to August - Explorer Abel Tasmans second expedition for the Dutch East India Company maps the north coast of Australia. ... The Tokugawa shogunate or Tokugawa bakufu (徳川幕府) (also known as the Edo bakufu) was a feudal military dictatorship of Japan established in 1603 by Tokugawa Ieyasu and ruled by the shoguns of the Tokugawa family until 1868. ... Shogun Tokugawa Hidetada Tokugawa Hidetada May 2, 1579—March 14, 1632) was the second shogun of the Tokugawa dynasty, who ruled from 1605 until his abdication in 1623. ...

The adopted son of Doi Toshimasa, Toshikatsu is generally believed to be the biological son of Mizuno Nobutomo, though there are some who claim he was an illegitimate son of shogun Tokugawa Ieyasu. He served the shogunate as advisor to shogun 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, however, Doi became one of the first to be appointed to the newly created post of Tairō (Great Elder), and was made daimyo (feudal lord) of Koga Domain in Shimousa Province, with a revenue of 160,000 koku. Shogun Tokugawa Ieyasu The Tokugawa clan crest This is a Japanese name; the family name is Tokugawa Tokugawa Ieyasu (previously spelled Iyeyasu) January 31, 1543 – June 1, 1616) was the founder and first shogun of the Tokugawa shogunate of Japan which ruled from the Battle of Sekigahara in 1600 until... The kingdom of Ayutthaya was a Thai kingdom that existed from the 1350 to 1767. ... Tairō (大老, lit. ... Categories: Japan geography stubs | Chiba Prefecture | Old provinces of Japan ... A koku ) is a unit of volume in Japan, equal to ten cubic shaku. ...

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