Since all the children of the Emperor Tenmu, except the Princess Taki who was conferred Ippon as the last existing child of the Emperor Tenmu, were born to mothers who were higher than the rank of the senior court lady; it is supposed that the status of the mothers was deeply related.
なお、天武天皇の子女で最後の生存者として叙された多紀内親王以外はいずれも内命婦以上の高位の女性の所生であり、母親の身分も深く関与したと考えられている。