In 1379, he was appointed to be Shugo of Izumo Province and Oki Province after Takahide SASAKI fell; as a result he became Shugo of three provinces including Tanba.
康暦元年（1379年）、佐々木高秀が没落すると出雲国・隠岐国2ヵ国の守護職に任じられ、丹波と合わせて3ヵ国の守護になった。