Furthermore, according to an article from October 574, SOGA no Umako, O-omi, was sent to Kibi in order to increase profits from Shirai no Miyake and tabe, and a Meiseki (a card showing official rank, name and age) of the tabe was granted to Itsu ("Nihonshoki").
さらに574年（敏達天皇3）十月の条に、大臣（おおおみ）の蘇我馬子（そがのうまこ）を吉備に遣わし、白猪屯倉と田部とを増益して、その田部の名籍を膽津に授けたとある（『日本書紀』）。