None. Cleopatra had three sisters. Cleopatra VI, we know virtually nothing about. Berenice married a cousin and a week later had him killed then married a Greco/Egyptian named Archelaos. Arsinoe did not marry.
Cleopatra's father (Ptolemy XII) was a Pharaoh. he ran away to a different country he left the throne vacant. Cleopatra and her little sister ran away to get him to come back to his throne, but when he didn't Cleopatra decided to marry and take the throne.
Cleopatra's father was officially married to a woman named Cleopatra V.
No, it is illegal to marry your sister anywhere in the world.
yes you can marry because she is your cosin sister
Yes, if his wife is dead or divorced he could marry her sister.
Yes. You can marry your LIVE wife's sister if you want to, provided that you are both free to marry.
Your cousin's sister is also your cousin. In some places it is legal to marry your cousin.
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This is legal for a man to marry his widow's sister in France.
Marry an African women and have child with her within the African border.
Yes, they did marry.
A sister in law, by definition, is the sister of your wife. As long as you aren't still married to your wife, it would be legal. A sister-in-law can also be your brother's wife. You can marry her provided she is not still married to your brother.