Are there any cases of royal brothers and sisters marrying?
It is relatively accepted that incestuous marriages were widespread at least during the Graeco-Roman period of Egyptian history. Numerous papyri and the Roman census declarations attest to many husbands and wives being brother and sister. Some of these incestuous relationships were in the royal family, especially the Ptolemies (Cleopatra of Egypt, who married more than one of her brothers). In some societies, like Ancient Egypt, brother–sister, father–daughter and mother–son relations were practiced among royalty, to keep the “blood line” within the family. There were probably some brother and sister marriages, but more likely than not, the siblings in question would have been half-brothers and half-sisters (King Tut married his half-sister Ankhesenamun). The royal family, on the other hand, did have more incestuous marriages. The royal blood ran through the females, not the males. To become pharaoh, a man had to marry a royal princess, which would be his sister or half-sister. The pre
