FUJIWARA no Tadanobu was 17 years old at that time, and since the son of MINAMOTO no Masanobu was first assigned with court duty when he was 16 years old (excluding MINAMOTO no Sukeyoshi who became the monjosho (student of literary studies in the Imperial University) once entering Daigaku-ryo (Bureau of Education under the ritsuryo system)), it is believed that he was 16 or 17 years old at that time.
藤原斉信が当時17歳であること、源雅信の子息の初任官がいずれも16歳（大学寮に入って文章生を経た源扶義を除く）であったことから、この頃16・17歳と考えられている。