was a Japanese ''

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 no ...

'' of the

Sengoku period The was the period in History of Japan, Japanese history in which civil wars and social upheavals took place almost continuously in the 15th and 16th centuries. The Kyōtoku incident (1454), Ōnin War (1467), or (1493) are generally chosen as th ...

, and high-ranking government advisor, holding the title of ''

Rōjū The , usually translated as ''Elder (administrative title), Elder'', was one of the highest-ranking government posts under the Tokugawa shogunate of Edo period Japan. The term refers either to individual Elders, or to the Council of Elders as a wh ...

'', and later '' Tairō''. The son of Sakai Shigetada, Tadayo was born in Nishio,

Mikawa Province was an Provinces of Japan, old province in the area that today forms the eastern half of Aichi Prefecture.Louis-Frédéric, Nussbaum, Louis-Frédéric. (2005). "''Mikawa''" in . Its abbreviated form name was . Mikawa bordered on Owari Province, O ...

; his childhood name was Manchiyo. He became a trusted elder (''rōjū'') in

Toyotomi Hideyoshi , otherwise known as and , was a Japanese samurai and ''daimyō'' (feudal lord) of the late Sengoku period, Sengoku and Azuchi-Momoyama periods and regarded as the second "Great Unifier" of Japan.Richard Holmes, The World Atlas of Warfare: ...

's government, alongside

Tokugawa Ieyasu Tokugawa Ieyasu (born Matsudaira Takechiyo; 31 January 1543 – 1 June 1616) was the founder and first ''shōgun'' of the Tokugawa shogunate of Japan, which ruled from 1603 until the Meiji Restoration in 1868. He was the third of the three "Gr ...

. Under Hideyoshi, he was made lord of Kawagoe Castle (in

Musashi Province was a Provinces of Japan, province of Japan, which today comprises Tokyo, Tokyo Metropolis, most of Saitama Prefecture and part of Kanagawa Prefecture. It was sometimes called . The province encompassed Kawasaki, Kanagawa, Kawasaki and Yokohama. ...

, today

Saitama Prefecture is a Landlocked country, landlocked Prefectures of Japan, prefecture of Japan located in the Kantō region of Honshu. Saitama Prefecture has a population of 7,338,536 (January 1, 2020) and has a geographic area of 3,797 Square kilometre, km2 ( ...

) and later of

Nagoya Castle is a Japanese castle located in Nagoya, Japan. Nagoya Castle was constructed by the Owari Domain in 1612 during the Edo period on the site of an earlier castle of the Oda clan in the Sengoku period. Nagoya Castle was the heart of one of the ...

Kyūshū is the third-largest island of Japan's four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa and the other Ryukyu (''Nansei'') Islands). In the past, it has been known as , and . The historical regio ...

Hizen Province was an old provinces of Japan, old province of Japan in the area of the Saga Prefecture, Saga and Nagasaki Prefecture, Nagasaki prefectures. It was sometimes called , with Higo Province. Hizen bordered on the provinces of Chikuzen Province, Ch ...

. In 1600, in the lead-up to the decisive

Sekigahara campaign The Sekigahara Campaign was a series of battles in Japan fought between the Eastern Army aligned with Tokugawa Ieyasu and the Western Army loyal to Ishida Mitsunari, culminating in the decisive Battle of Sekigahara. The conflict was sparked by a ...

, he fought against the Tokugawa at Aizu, and submitted to them at the

siege of Ueda Sekigahara campaign Sieges of the Sengoku period Attacks on castles in Japan Shinano Province Ueda, Nagano Military history of Nagano Prefecture The siege of Ueda was staged in 1600 by Tokugawa Hidetada, son and heir of the warlord Tokugawa ...

. Thus, having joined the Tokugawa prior to the battle of Sekigahara itself, Sakai was made a '' fudai daimyō'', and counted among the Tokugawa's more trusted retainers. He served under Ieyasu for a time, and under the second shōgun,

Tokugawa 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. Early life (1579–1593) Tokugawa Hidetada was born to Tokugawa Ieyasu and the Lady Saigō on May ...

, as a ''

hatamoto A was a high ranking samurai in the direct service of the Tokugawa shogunate of feudal Japan. While all three of the Shōgun, shogunates in History of Japan, Japanese history had official retainers, in the two preceding ones, they were referred ...

''. Sakai's father died in 1617, and so he inherited his father's domain of Maebashi in

Harima Province or Banshū (播州) was a province of Japan in the part of Honshū that is the southwestern part of present-day Hyōgo Prefecture. Harima bordered on Tajima, Tanba, Settsu, Bizen, and Mimasaka Provinces. Its capital was Himeji. During th ...

, which had been assessed at 33,000 ''

koku The is a Chinese-based Japanese unit of volume. One koku is equivalent to 10 or approximately , or about of rice. It converts, in turn, to 100 shō and 1,000 gō. One ''gō'' is the traditional volume of a single serving of rice (before co ...

'', and was now changed to 85,000 ''koku'' by the shogunate. In 1632, following a shakeup of positions within the bureaucracy, Sakai became ''nishi no maru rusui'', placing him in charge of the western districts of

Edo Castle is a flatland castle that was built in 1457 by Ōta Dōkan in Edo, Toshima District, Musashi Province. In modern times it is part of the Tokyo Imperial Palace in Chiyoda, Tokyo, and is therefore also known as . Tokugawa Ieyasu established th ...

, the seat of the shogunal government. Two years later, the Western districts were burnt down while the shōgun was away in Kyoto. Sakai was stripped of his position, and exiled to

Kan'ei-ji (also spelled Kan'eiji or Kaneiji) is a Tendai Buddhist temple in Tokyo, Japan, founded in 1625 during the Kan'ei era by Tenkai, in an attempt to emulate the powerful religious center Enryaku-ji, in Kyoto. The main object of worship is .Nihon ...

. Appealing to the

Gosanke The , also called simply , or even , were the most noble three branches of the Tokugawa clan of Japan: Owari, Kii, and Mito, all of which were descended from clan founder Tokugawa Ieyasu's three youngest sons, Yoshinao, Yorinobu, and Yorifusa ...

(the heads of the three branch families of the Tokugawa), Sakai was invited to return to the castle two years later, in 1636. Along with Doi Toshikatsu and Sakai Tadakatsu, he was appointed to the newly created post of ''Tairō'' (Great Elder). He died within weeks of being appointed, however, at the age of 64. His eldest son, Sakai Tadayuki, died around the same time, and so the next oldest son, Sakai Tadakiyo succeeded his father.

References

*''Much of this article's content derives from that presented on the Japanese Wikipedia.'' *Sansom, George (1963). ''A History of Japan: 1615–1867''. Stanford, California: Stanford University Press. {{DEFAULTSORT:Sakai, Tadayo Rōjū Tairō Daimyo 1572 births 1636 deaths Sakai clan