was the seventh son of Hōjō Ujiyasu

Hojo Ujiyasu

was the son of Hōjō Ujitsuna and a daimyō of the Odawara Hōjō clan.Upon his father's death in 1541, a number of the Hōjō's enemies sought to take advantage of the opportunity to seize major Hōjō strongholds...

; he was adopted by Uesugi Kenshin

Uesugi Kenshin

was a daimyo who ruled Echigo province in the Sengoku period of Japan.He was one of the most powerful lords of the Sengoku period. While chiefly remembered for his prowess on the battlefield, Kenshin is also regarded as an extremely skillful administrator who fostered the growth of local industries...

, and was meant to be Kenshin's heir. However, in 1578, he was attacked in his castle at Ōtate

Siege of Otate

The 1578 siege of Ōtate took place following the sudden death of Uesugi Kenshin, one of Japan's greatest warlords. Kenshin had requested that the inheritance be split between his nephew, Uesugi Kagekatsu, and his adopted son Uesugi Kagetora....

 by Uesugi Kagekatsu

Uesugi Kagekatsu

was a daimyo during the Sengoku and Edo periods of Japanese history. The son of Nagao Masakage and husband of Uesugi Kenshin's elder sister, Aya-Gozen. After his father died, he was adopted by Kenshin....

--Kagetora's respective brother-in-law—and was subsequently defeated. Kagetora committed suicide

Seppuku

is a form of Japanese ritual suicide by disembowelment. Seppuku was originally reserved only for samurai. Part of the samurai bushido honor code, seppuku was either used voluntarily by samurai to die with honor rather than fall into the hands of their enemies , or as a form of capital punishment...

 the following year.
(上杉景虎) 1552? 1554? - Apr. 19, 1579

Also known as: possibly Hōjō Ujihide (北条氏秀), Hōjō Saburō (北条三郎), Saburō Kagetora (三郎景虎)

Historically: Uesugi Kagetora was the seventh son (sixth to survive to adulthood) of Hōjō Ujiyasu, younger brother of Hōjō Ujimasa, Hōjō Ujiteru, Hōjō Ujikuni, Hōjō Ujinori, Hōjō Ujitada, and older brother of Hōjō Ujimitsu.