A survey of Baha'i history ...
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Khadijih Bagum & Asiyih Khanum were born in the same year
The wife of the Bab, Khadijih Bagum and the wife of Baha’u’llah, Asiyih Khanum (Navvab), both were born in the same year – the year 1820. Baha’u’llah was 2 years older than the Bab. (A Basic Baha’i Chronology, by Glenn Cameron and Wendi Momen)