It was believed that portraits were drawn by FUJIWARA no Nobuzane (1176 - 1265) and texts were by Yoshitsune KUJO (1169 - 1206), but there is no evidence for it.
古来、絵の筆者は藤原信実（1176-1265）、文字の筆者は九条良経（1169-1206）と伝承するが、確証はない。