Yes, historical accounts indicate that a king did marry his own daughter.
A Notable Instance in History
One specific case involves the renowned Mughal Emperor Shah Jahan, famous for commissioning the construction of the magnificent Taj Mahal. After the passing of his beloved wife, Mumtaz Mahal, it is documented that Shah Jahan married his own daughter, Jahanara Begum.
This unusual union reportedly occurred because Shah Jahan believed that Jahanara bore a striking resemblance to her mother, Mumtaz. This act, while deeply unconventional by many societal standards, stands as a rare and notable event in royal history.
