It is usually assumed that eight female Emperors in ten generations, including six female Emperors in eight generations during the period between the end of the sixth century and the latter half of the eighth century, were in the past, and it is undeniable that their father was either Emperor or Crown Prince.
一般に女性天皇は過去に8人10代存在するとされ、その内の6人8代は6世紀末から8世紀後半に集中するが、いずれも天皇または皇子を父に持つことは事実である。