was ''

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

'' of

Odawara Domain 250px, Odawara Castle, Headquarters of the Odawara Domain was a Japanese domain of the Edo period, located primarily in western Sagami Province (modern-day Kanagawa Prefecture). It was centered on Odawara Castle in what is now the city of Oda ...

Sagami Province was a province of Japan located in what is today the central and western Kanagawa Prefecture. Nussbaum, Louis-Frédéric. (2005). "''Kanagawa''" at . Sagami Province bordered the provinces of Izu, Musashi, and Suruga. It had access to the Pac ...

, (modern-day

Kanagawa Prefecture is a prefecture of Japan located in the Kantō region of Honshu. Kanagawa Prefecture is the second-most populous prefecture of Japan at 9,221,129 (1 April 2022) and third-densest at . Its geographic area of makes it fifth-smallest. Kanag ...

) in early

Edo period The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was character ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...

Biography

Ōkubo Tadamasu was a son of

Ōkubo Tadatomo was a ''daimyō'' in early Edo period, Japan. He was assigned by the Tokugawa shogunate to Karatsu Domain, Sakura Domain, and finally to Odawara Domain in Sagami Province, (modern-day Kanagawa Prefecture), where his descendants remained until the ...

, daimyō of Odawara Domain. In 1681, he was appointed a ''

Sōshaban were officials of the Tokugawa shogunate in Edo period Japan. Conventional interpretations have construed this Japanese title as "master of ceremonies" Created in 1632, this '' bakufu'' title identified an official selected from the ranks of the ...

'' (Master of Ceremonies) at

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 ...

, and rose to the position of '' Jisha-bugyō'' on July 22, 1685. On December 18, 1687, he concurrently received the position of ''

wakadoshiyori The ', or "Junior Elders", were high government officials in the Edo period Japan under the Tokugawa shogunate (1603-1867). The position was established around 1633, but appointments were irregular until 1662. The four to six ''wakadoshiyori'' we ...

'' . Tadamasu became daimyō of Odawara on the retirement of his father in 1698. In November 1703, the Great Genroku earthquake caused severe damage to

Edo Edo ( ja, , , "bay-entrance" or "estuary"), also romanized as Jedo, Yedo or Yeddo, is the former name of Tokyo. Edo, formerly a ''jōkamachi'' (castle town) centered on Edo Castle located in Musashi Province, became the ''de facto'' capital of ...

and to

Odawara is a city in Kanagawa Prefecture, Japan. , the city had an estimated population of 188,482 and a population density of 1,700 persons per km2. The total area of the city is . Geography Odawara lies in the Ashigara Plains, in the far western por ...

, destroying much of Odawara-juku on the Tōkaidō connecting Edo with

Kyoto Kyoto (; Japanese: , ''Kyōto'' ), officially , is the capital city of Kyoto Prefecture in Japan. Located in the Kansai region on the island of Honshu, Kyoto forms a part of the Keihanshin metropolitan area along with Osaka and Kobe. , the c ...

. Despite this disaster, on September 21, 1705, Tadamasu was promoted to the position of

rōjū The , usually translated as ''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 whole; under the first two ''shō ...

under ''

Shōgun , officially , was the title of the military dictators of Japan during most of the period spanning from 1185 to 1868. Nominally appointed by the Emperor, shoguns were usually the de facto rulers of the country, though during part of the Kamaku ...

Tokugawa Tsunayoshi was the fifth ''shōgun'' of the Tokugawa dynasty of Japan. He was the younger brother of Tokugawa Ietsuna, as well as the son of Tokugawa Iemitsu, the grandson of Tokugawa Hidetada, and the great-grandson of Tokugawa Ieyasu.Nussbaum, Louis-Fr ...

. However, further natural disasters followed. On October 4, 1707, the Great Hoei earthquake again devastated Edo and Odawara, destroying much of what had been rebuilt from the earlier disaster. This was followed by the

Hōei eruption of Mount Fuji was a after Genroku and before Shōtoku''.'' This period spanned the years from March 1704 through April 1711. The reigning emperors were and . Change of era * 1704 : In reaction to the Great Genroku earthquake in Genroku 16, the era name w ...

in December, with

volcanic ash Volcanic ash consists of fragments of rock, mineral crystals, and volcanic glass, created during volcanic eruptions and measuring less than 2 mm (0.079 inches) in diameter. The term volcanic ash is also often loosely used to refer ...

raining on Edo and Odawara and repeated earthquakes. The following year the Sakawa River flooded due to sediment build-up resulting from the ash fall, and the crops failed. Some 104 villages in Ashigarakami District and 59 villages in Suntō District were rendered uninhabitable. Tadamasu appealed to the

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 ...

for assistance, and in response, the government annexed the disaster-struck portions of his territories as ''

tenryō 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' ...

'' under the direct control of the central government, and provided Tadamasu for new territories with an assessed value of 60,000 ''

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 ...

'' scattered across the provinces of Izu, Mimasaka and Harima. In addition, a special nationwide tax of two gold ''

ryō The was a gold currency unit in the shakkanhō system in pre- Meiji Japan. It was eventually replaced with a system based on the '' yen''. Origins The ''ryō'' was originally a unit of weight from China, the ''tael.'' It came into use in Jap ...

'' for every 100 ''koku'' of rice produced raised 480,000 ''ryō'' for relief efforts. Tadamasu died in 1713. The new territories provided by the shogunate where exchanged back in 1747, but did not regain their former value for another several decades.

References

* Papinot, Edmond. (1906) ''Dictionnaire d'histoire et de géographie du japon''. Tokyo: Librarie Sansaish
..Click link for digitized 1906 ''Nobiliaire du japon'' (2003)
* ''The content of much of this article was derived from that of the corresponding article on Japanese Wikipedia.'' Fudai daimyo Rōjū Tadamasa 1632 births 1713 deaths {{daimyo-stub