Kinkata didn't just lead the government by the Imperial Court as a dignitary, but he was also familiar with traditional customs and had a rich academic background, thus he was frequently asked for advice by Emperor, Empress and court nobles and "Entairyaku" (Diary of Kinkata TOIN) is a valuable historical data to know the movement of various persons of the Imperial Court at that time.
公賢は朝廷で高位高官の地位にあって朝政を主導しただけでなく、有職故実にも明るく学識経験も豊富だったため、天皇・院・公家らから相談を受けることも多く、その日記『園太暦』はこの時代の朝廷の様々な人物の動きを知る上での貴重な基本史料となっている。