According to sukuyo (astrology), it was predicted that 'there would be three children: one will be an Emperor, one will be an Empress, and even the inferior one in the middle will be Dajo Daijin (Grand Minister of State)' (in the chapter of 'Miotsukushi' (Channel Buoys)), and the prediction comes true since his three children were: Emperor Reizei, the son with Fujitsubo; Yugiri, the eldest son with Aoi no ue; and Princess Akashi, the daughter with Akashi no Onkata.
宿曜の占いによれば「3人の子供をなし、ひとりは帝、ひとりは中宮、真ん中の劣った者も太政大臣となる」と言われ（「澪標」）、これは藤壺の子冷泉帝、葵の上との間に生まれた長男の夕霧(源氏物語)、明石の御方の娘である明石の姫君の三人により実現した。