Tadaoki HOSOKAWA, a head of the Hosokawa family, succeeded to Tanabe-jo Castle, and while Tadaoki was absent during the Aizu seibatsu (an expedition to punish and conquer Aizu), Mitsunari ISHIDA announced he would overthrow Ieyasu TOKUGAWA who was behaving in defiance of Hideyoshi TOYOTOMI's last will.
その後の田辺城は細川家当主である細川忠興の居城となるが、忠興が会津征伐へ赴いている最中に石田三成が、豊臣秀吉の遺命を無視する徳川家康の打倒を宣言した。