In the 11th volume of "Kaiki". written by Doan YAMASHINA, a court physician (specializing in what is today known as pediatrics) and master of the tea ceremony, Iehiro's sayings and doings are described like a diary and we can clearly see his personality, varied attainments and considerable insight.
なお、家煕の人となりや博学多才ぶり、高い見識のほどについては、侍医（専門は現代で言う小児科）で、茶人であった山科道安（やましなどうあん）がその言行を日録風に記した『槐記』11巻により、如実に知ることができる。