And as for her age, 'she is forty-five (45 years old),' was written in "Mizu Kagami (The Water Mirror)," and to calculate her age inversely based on this, it is Emperor Ingyo 29 (440), but it is not clear how it true to the historical fact.
なお、年齢については、『水鏡』に「御年四十五（45歳）」とあり、これに基づいて逆算すれば、允恭天皇29年（440年）の誕生となるが、どれだけ史実を反映しているかは不明である。