He was the last Court noble from the Ishikawa clan (the clan also included the family originated from his great-uncle ISHIKAWA no Toyonari, whose highest position was Chunagon, but this family's influence was not so strong after Toyonari's death).
石川氏から公卿が出るのも結果的に彼が最後（石川氏は他にも大叔父の石川豊成の系統があるが、中納言を極官とした彼が亡くなって以降振るわなかた）であった。