In "Kasenkashuhon Turayuki-shu" (Poetry Collection of Kasen (superior poets), KI no Tsurayuki's poetry collection) there was a spring waka (Japanese poem) in 936 as 'shoji to separate, as FUJIWARA no Nakahira, Udaijin (minister of the right), and his son live in the same place.'
『歌仙家集本貫之集』の承平(日本)六年（936年）春の歌に「右大臣藤原仲平おやこ同じ所にすみ給ひける、へだての障子」とある。