Descendants of his second son, FUJIWARA no Tadamasa, and those of his third son, FUJIWARA no Tadachika, thrived as the Kasannoin family and the Nakayama family, respectively.
次男の藤原忠雅、三男の藤原忠親の子孫が、後世においてそれぞれ花山院家、中山家として発展した。