For that reason, there is a theory that Yoshio(薩雄), who, according to "Shoku Nihongi" (Chronicles of Japan II), was honored in July 759 with Jugoinoge (Junior Fifth Rank, Lower Grade), and promoted from Shorokuinojo (Senior Sixth Rank, Upper Grade), is the one and the same person as Yoshio(刷雄).
よって、『続日本紀』翌年天平宝字3年6月庚戊に正六位上から従五位下に叙された薩雄を刷雄と同一人物とする説を述べている。