He adopted his younger brother's son, TAIRA no Chikasuke to succeed him and his descendants, in after ages, prospered being separated into several families like the Nishinotoin family, the Hiramatsu family and the Katano family.
弟の信季の子平親輔を養子として後を継がせたが、その子孫は後世において西洞院家、平松家、交野家など数家に分かれて繁栄した。