was a retainer of the Japanese

Hōjō clan The was a Japanese samurai family who controlled the hereditary title of ''shikken'' (regent) of the Kamakura shogunate between 1203 and 1333. Despite the title, in practice the family wielded actual political power in Japan during this period ...

and an early ''

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 ...

'' of

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 ...

. Harutomo was the son of

Oyama Takatomo Oyama, Ōyama or Ohyama may refer to: * Oyama, Tochigi ( ja, 小山市, link=no), a city in Japan * Ōyama, Ōita ( ja, 大山町, link=no), a town in Japan * Oyama, Shizuoka ( ja, 小山町, link=no), a town in Japan * Mount Ōyama (Kanagawa) ( ja ...

and was adopted by his uncle

Yūki Masakatsu was a Japanese samurai during the Sengoku period. He was the head of the Yūki clan is a Japanese samurai kin group. Papinot, Jacques Edmond Joseph. (1906). ''Dictionnaire d’histoire et de géographie du Japon''; Papinot, (2003)"Yūki," ''N ...

. Harutomo ultimately accepted the authority of the Hōjō, by his ties were severed when

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

besieged the Hōjō castle of

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 ...

. Harutomo later adopted the 2nd son of the famous

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 ...

, Hideyasu, whom he later accompanied to the province of Echizen following the year of 1600.

References

Daimyo 1533 births 1614 deaths Yūki clan {{daimyo-stub