While Emperor Ichijo was in power, FUJIWARA no Michitaka was in serious condition, his oldest son, FUJIWARA no Korechika became Nairan for a limited period until Michitaka could recover.
一条天皇の時に関白藤原道隆が重態となり、嫡男藤原伊周が道隆が回復するまでの期間限定で内覧となった。