Shigeko's real personality was mentioned impressively in "Tamakiharu" (the diary of Kenshumonin Chunagon), written by FUJIWARA no Teika's sister, Kenju jo.
滋子の素顔は、藤原定家の同母姉・健寿女が日記『たまきはる（建春門院中納言日記）』に印象的に書き記している。