Generally the descriptions in the Kojiki (Records of Ancient Matters) and the Nihonshoki (Chronicles of Japan) were respected for the details on female Emperors, all the female Emperors in history were female emperor of the male lineage, there were no examples of female emperors married to non Imperial Family members with her children succeeding to the throne.
一般的には記紀の記述を尊重し、過去に存在した女性天皇は何れも男系の女性天皇であり、また女性天皇が皇族男子以外と結婚して産んだ子が皇位を継いだことは一度としてないとされている。