At first he was a vassal of the 13th shogun Yoshiteru ASHIKAGA, and after his death he strove to make Yoshiaki ASHIKAGA the 15th shogun, but later he followed Nobunaga ODA and was made daimyo of a fief of 110,000 koku of rice in Miyazu, in Tango Province.
初め13代将軍足利義輝に仕え、その死後は15代将軍足利義昭の擁立に尽力するが、後に織田信長に従い丹後国宮津市11万石の大名となる。