Yamanouchi Uesugi clan as Kantō kanrei (Governor-General of Kantō region, 関東管領). As a result, many of the Kantō warlords became vassals of the Hōjō clan...

of Kantō kubō (関東公方), the office of the Ashikaga shogunate in charge of the Kanto region, killed Uesugi Noritada of Kantō kanrei (関東管領), Kantō kubō's...

Uesugi clan, and in order to accept the official title of Kantō Kanrei (関東管領) he changed his name again to Uesugi Terutora (上杉輝虎) to honor the 13th shōgun...