From these relationships, it is said that he played a role as mediator between Korekata who had been on FUJIWARA no Nobuyori's side and Kiyomori, when Masakata held a secret communication with TAIIRA no Kiyomori in the Heiji War.
こうした関係から、平治元年（1159年）の平治の乱においては、初め藤原信頼方に加わっていた惟方が清盛に内通するに当たって仲介役を果たしたともされる。