Although the highest rank Kinnari held was Junii Gon Chunagon, his daughter Shigeko, who was adopted by Dainagon (chief councilor of state) FUJIWARA no Yoshinobu, became Emperor Go-Sanjo's wife and Emperor Shirakawa's mother triggered the great prosperity of the Kanin lineage in later years, and his family line came to turn out many ministers.
公成自身の最高位は従二位権中納言であったが、娘の茂子が大納言藤原能信の養女として後三条天皇の妃となり白河天皇を産んだことを契機に、後世において閑院流は大いに繁栄し、大臣を輩出する家柄となっていった。