In the volume seventeenth of "Gogenbukan" (book of heraldry of the Rokkaku clan), there is a description that Hideyoshi, who was still of low status, served Yoshihide at the Kannonji-jo Castle and was given his Kataimina.
『江源武鑑』の巻十七にも天正三年いまだ身分の低かった秀吉が観音寺城に出仕し、義秀から片諱を賜ったという記述が見える。