Let me show you how it's done kiddos: And I can't even really object to this one as, you know, it all actually happened: which, yeah, is UBER-SQICK, but, that's history: and history doesn't change, it just IS. So, yeah...
I wonder if I can embed a link to a specific part of a video... Nope, I can't. Well, 10:02 is the important part.
Now that I have a chance to actually watch the video, because I didn't know exactly what was going to be in the video. I saw the title, knew about the Ptolemies and went straight for that video because I had to go out and shovel snow... It was mentioned briefly in the video, but there is actually a..."Logical" reasoning behind the mess of a family that was.The Ptolmaic Dynasty had to get recognition by the local Egyptians to have any chance of not being overthrown immediately and executed. In order to do that, they had to declare themselves Pharaoh and the successors to that legacy(and even then they were constantly dealing with internal struggles). With declaring themselves Pharaohs comes the traditions from such things and one of them was.....inbreeding! The Pharaohs of Ancient Egypt practiced incest for literal millenia. Religion was everything in Ancient Egypt and the Pharaohs stood right below the Gods in terms of importance. In fact, they were pretty much treated as gods or the children of gods(depending on which Pharonic dynasty you're looking at). Due to their deific stature. The only ones they deserved to marry was those related to them. Thus the incestuous slurry that is Divine Right to Rule. (Ramesses II married Three or Four of his daughters) (Tutankhamun's parents were closely related and was married to his half-sister) There is a lot of incest that happened in history among royalty. Not even just Ancient Egypt, but numerous ancient societies also had practiced incest. Ancient Persia was also an kingdom known for it's royal incest. Even outside of paganism, Feudal Europe was rampant with those of royal blood getting it on with their relatives. They did it for hundreds of years, all the way up to the Industrial Revolution(and probably a little past that as well).
"This Message Was Approved And Paid For By His Holiness The Anime Pope." (Laughed so hard I nearly choked to death!)
Let’s not forget that marrying your sisters means that your wealth doesn’t get split off and it lessens the possibility of other claims to the throne to just your kids, and if it’s a daughter, marry her to keep from having a son-in-law who could take control. Still, if someone wanted to make a soap opera version of an erotic tale, this would definitely be a way to go.