He was impressed particularly by the enthusiasm for learning by a young noble named KAYA no Toyotoshi and reportedly imparted all of his knowledge to the young man (who, in later years, won recognition as an outstanding poet and scholar).
その中でも一人の青年貴族賀陽豊年の勉強熱心さには宅嗣も感心して、宅嗣自らがその全知識を豊年に伝授したという話が伝わっている（後年、豊年は優れた詩人・学者として名を残している）。