Like I said, royals aren’t normal people. See the fabled family tree of the Ptolemaic dynasty:
But that only works if you have a family fortune to protect. Normal people would rather spread their children around and increase their chances of survival.
So for example: Cleopatra II was first married to Ptolemy VI, her brother, and had a daughter Cleopatra III. Then when Ptolemy VI died Cleopatra II was married to Ptolemy VIII, her other brother. Ptolemy VIII also took his niece Cleopatra III as his second wife.
Like I said, royals aren’t normal people. See the fabled family tree of the Ptolemaic dynasty:
But that only works if you have a family fortune to protect. Normal people would rather spread their children around and increase their chances of survival.
Yikes! You have to go back at least 4 generations from Cleopatra VII to find ANYONE that isn’t EXCLUSIVELY a descendant of Arsinoe III and Ptolemy IV.
Holy shit!
So for example: Cleopatra II was first married to Ptolemy VI, her brother, and had a daughter Cleopatra III. Then when Ptolemy VI died Cleopatra II was married to Ptolemy VIII, her other brother. Ptolemy VIII also took his niece Cleopatra III as his second wife.