His name was recorded as 'KI no Tsuji' (Interpreter Ki) from an article on the eighth day of the fourth month of the fourth year in the Kaisei Era (839) of "The Record of a Pilgrimage to China in Search of the Law" written by Ennin.
円仁の『入唐求法巡礼行記』一・開成4年（839年）4月8日条には、「紀通事」として彼の名が見える。