"Genealogy of secular surname of Enchin" written by Enchin (Chisho Daishi) in his own hand (during the Jowa era, the property of Enjo-ji Temple, a national treasure) is valuable Tatekeizu (a genealogy in which names of parents and those of children are connected with vertical lines) starting with "Emperor Keiko-Takekunikoriwake no oji."
なお、円珍（智証大師）の自筆である『円珍俗姓系図』（承和(日本)年間、園城寺蔵、国宝）は、「景行天皇─武国凝別皇子」に始まる竪系図として貴重である。