In November 1169, during the Yasoshima Festival sponsored by Emperor Takakura, Keishi served as special envoy, and Narichika, his older brother Takasue, and other members of the Taira clan accompanied Keishi.
嘉応元年（1169年）11月、高倉天皇の八十嶋祭では経子が勅使役を務め、成親も兄・隆季や平氏一門とともに付き従った。