Yoritada wanted to become a maternal relative of the Emperor and send FUJIWARA no Teishi as a nyogo for the Emperor Kazan, but was unable to gain Kazan's favor or bear children.
頼忠は外戚たろうと花山天皇にも藤原諟子を女御に入れるが、花山の寵愛は受けられず、やはり子は得られなかった。