One was FUJIWARA no Tabiko, her father was FUJIWARA no Momokawa who has rendered distinguished service for enthroning Emperor Kanmu, and the other was TABIHI no Takako who had hereditary title of Mahito kabane (the seventh Emperor Senka), both of them were considered as special cases.
藤原旅子の父藤原百川が桓武天皇擁立の功労者であったという特殊事情、多治比高子は真人カバネ（宣化天皇7代目）の持ち主でありこれも特殊事情と考えられている。