According to "Kikuchi Keizu" (the genealogy of the Kikuchi family), Masanori FUJIWARA, the son of FUJIWARA no Takaie who was the Dazai gon no sochi (Provisional Governor-General of the Dazai-fu offices), left the capital to Dazaifu with his father Takaie, and adopted another name Hyoto after being appointed to Chinzei no Hyoto under the imperial decree.
『菊池系図』によると、大宰権帥藤原隆家の子政則が父と共に大宰府に下向し、鎮西の兵頭の宣旨を受けて兵藤と号した。