Uesugi Kagekatsu  Kagekatsu was the son of Nagao Masakage, the head of the Ueda Nagao clan and husband of Uesugi Kenshin's elder sister, Aya-Gozen. After his father died, he was adopted by Kenshin. His childhood name was Unomatsu. In 1577, He participated in Battle of Tedorigawa. Upon Kenshin's death in 1578, Kagekatsu battled Kenshin's other adopted son Uesugi Kagetora for the inheritance, defeating him in the 1578 Siege of Otate. He forced Kagetora to commit seppuku, and became head of the Uesugi clan. Kagekatsu married Takeda Katsuyori's sister (Takeda Shingen's daughter) after the Siege of Otate. By 1579, Kagekatsu had gained the upper hand and forced Kagetora to commit suicide. This bloody division allowed Oda Nobunaga's generals (headed by Shibata Katsuie) to conquer the Uesugi's lands in Kaga, Noto, and Etchu. In 1582, Kagekatsu led an army into Etchu and was defeated by Oda forces at the Battle of Tenjinyama. He hastily returned to Echigo when he learned that Oda general Mori Nagayoshi had raided Echigo in his absence. When Oda laid Siege of Uozu castle in Etchu, in the course of which a number of important Uesugi retainers were killed, Kagekatsu's fortunes appeared bleak. Kagekatsu sent a letter to Satake Yoshishige, his allies. It's like a suicide note. The Uesugi were given a reprieve with the death of Nobunaga shortly afterwards. Kagekatsu made friendly overtures to Toyotomi Hideyoshi, and attacked Shibata Kasuie's northern outposts during the Shizugatake Campaign (1583) and went on to support Hideyoshi during the Komaki Campaign (1584), in which he played a limited role by launching a foray into Shinano. As a general under Toyotomi Hideyoshi, Kagekatsu took part in the Siege of Odawara 1590 and Korea campaigns 1592-1598, and rise to prominence to become a member of the council of Five Elders. Originally holding a 550,000 "koku" fief in Echigo Province, Kagekatsu received the fief of Aizu, worth a huge 1.2 million "koku" when Hideyoshi redistributed holdings in 1598.