Nagayoshi MIYOSHI took over Yakami-jo Castle in 1553 and arranged a marriage between Nagayori MATSUNAGA and the Naito clan, whereupon Nagayori became lord of the castle and pursued the conquest of Tanba, but Nagoyori was really no more than a puppet of the Miyoshi administration, and, after the death of Nagayoshi, was killed in a fierce attack by Naomasa AKAI in August 1565.
1553年三好長慶が八木城を奪回し、松永長頼を内藤氏の婚姻者とし八木城主として丹波経略を開始するが、彼は三好政権の傀儡に過ぎず、長慶死後の1565年8月に赤井直正の猛攻にあって戦死している。