Takasue's younger sister was the wife of Kiyomori's biological son, TAIRA no Shigemori, and Takasue himself also took Kiyomori's daughter as the wife of his own biological son, Takafusa.
隆季の妹は清盛の嫡子・平重盛の妻となっていたが、隆季も自らの嫡子・隆房の妻に清盛の娘を迎えた。