From the accounts in the "Sankaiki" (Tadachika NAKAYAMA's diary) and "Gyokuyo" (Diary of FUJIWARA no Kanezane), it can be confirmed that Shigemori, Yorimori, TAIRA no Tokitada and TAIRA no Koremori frequently attended events and ceremonies related to Tokuko's pregnancy and delivery.
『山槐記』『玉葉』を見ると徳子出産に関連する行事には、重盛・頼盛・平時忠・平維盛の4人が多く参仕していたことが確認できる。