This matched the description in Suizei-ki 二年条 "(Emperor Suizei, a father of Emperor Annei) took Isuzuyori hime for his wife as Empress, that is, she was a mioba (a sister of the wife) of Emperor."
これは綏靖紀二年条に「（安寧天皇の父である綏靖天皇は）五十鈴依媛を立てて皇后と為したまう。すなわち天皇の姨（みおば）なり」とあるのと合致する。