In 1565, Shingen and Nobunaga were allied through the marriage of the daughter of Naokado TOYAMA (the niece of Nobunaga as the adopted daughter of Nobunaga), with a kokujin ryoshu (local samurai lord) of Higashi Mino Province, into Katsuyori TAKEDA.
永禄8年（1565年）、信玄と信長は東美濃の国人領主・遠山直廉の娘（信長の姪にあたる）を信長が養女として武田勝頼に嫁がせることで同盟を結んだ。