Uesugi Kagetora
Uesugi Kagetora (上杉 景虎?, 1552 – April 19, 1579) was the seventh son of Hōjō Ujiyasu; he was adopted by Uesugi Kenshin, and was meant to be Kenshin's heir. However, in 1578, he was attacked in his castle at Ōtate by Uesugi Kagekatsu—Kagetora's respective brother-in-law—and was subsequently defeated. Kagetora committed suicide the following year.
Uesugi Kagetora (上杉景虎) was born in either 1552 or 1554, and during his lifetime was also known as Hōjō Ujihide (北条氏秀), Hōjō Saburō (北条三郎), Saburō Kagetora (三郎景虎). He 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. His mother was the sister-in-law of Tooyama Yasumitsu, a vassal of the Hōjō clan (other sources say Suikeiin, Ujiyasu's principle wife). It's likely that he and Hōjō Ujihide were two different people and that Ujihide was the son of Hōjō Tsunashige and living in Edo while Saburō was living in Echigo, so most historians refer to him as Hōjō Saburō when describing his early life.
As a child, he was sent into the priesthood at Sōun Temple in Hakone, then sent as hostage to Takeda Shingen of the Takeda clan in the three-way alliance between Hōjō, Takeda, and Imagawa formed in 1554. He was adopted by his uncle Hōjō Gen'an in 1569 and married his daughter.
When the Hōjō and Uesugi clans formed an alliance in 1569, Saburō was sent to Uesugi Kenshin in an exchange of hostages with Kakizaki Haruie. At first, the hostage was set to be Hōjō Ujimasa's third son Kunimasumaru, but Ujimasa could not bring himself to send off his son, who was then still a baby. Saburō was sent to the Uesugi clan in early 1570. Kenshin, who never married, developed a liking for the handsome and intelligent Saburō. He married his niece Seienin, the daughter of Nagao Masakage and older sister of Nagao Akikage (Uesugi Kagekatsu) to Saburō, gave him the name Kagetora (a name that had once belonged to Kenshin himself), and adopted him into the Uesugi clan.
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