The section 149 part I of Retsuden (Biographies) as the 199th volume of "Kutojo" (The Old Tang History) describes about Toi (Eastern Barbarians) including a chapter titled Wakoku, in which the last name of Wa king is described as Ame.
『旧唐書』卷199上列傳第149上東夷倭國においても倭国の王の姓は阿毎氏であるとしている。