Kinsue served as Nai-daijin (Minister of the Center) during the reigns of both Emperors Ichijo and Sanjo, and attempted Kokyu-fuseki (sending female family members to live in the Kokyu Palace) by making his daughter FUJIWARA no Gishi become Kokiden no nyogo (Empress Kokiden) of Emperor Ichijo, but this plan failed, as no princesses were born.
公季は一条天皇・三条天皇の両朝を通して内大臣の任にあり、娘藤原義子を一条天皇の弘徽殿女御にして後宮布石を進めたが、皇子女が得られず失敗に終わった。