Nothing is known about Hironari INBE except that he was promoted from Shorokuinojo (Senior Sixth Rank, Upper Grade) to Jugoinoge (Junior Fifth Rank, Lower Grade), as stated in the "November 17, 808" section of the "Nihon Kouki"
斎部広成の伝記は、『日本後紀』の808年(大同3年)11/17の条に「正六位上」から「従五位下」に昇ったとあるのみで、ほかの事は分からない。