He was in high demand by ministers and shogun to people of the local district for his lectures on Japanese classics and presented the Kakaisho, which was the annotation of 'Genji Monogatari' (Tale of Genji) under the pen name of 'Shorokuinojo Monogatari Hakushi MINAMOTO no Iryo' (MINAMOTO no Iryo, who was a scholar of stories holding the rank of Shorokuinojo (Senior Sixth Rank, Upper Grade)) during Shoji (1362-1368) years.
大臣や将軍をはじめ、地方国人にも古典を講じて人望があり、「正六位上物語博士源惟良」の筆名で、貞治年間、「源氏物語」の注釈書である河海抄を将軍足利義詮に献じている。