"Anba Gaiji Engi"(historical records book written in the Muromachi period) tells that he suppressed a gang of several thousand robbers who had plundered of tribute in Mt.Takakura in Shimotsuke Province and could show his strategy to the whole country in 915.
同15年（915年）には下野国高蔵山で貢調を略奪した群盗数千を鎮圧し武略を天下に知らしめたということが『鞍馬蓋寺縁起』に記されている。