Right. So I haven't read this entire thing, but I registered just to respond to it.
1. Guinevere is pretty much just as well known as Helen. I personally know less about her, cause I'm into the Greek stuff. However, I've known about Authur and his Knights, and Lancelot and Guinevere and the menage a trois since I was about 2. I found out about Helen when I was in High School.
2. The couple of posts I read did not seem to know anything about the whole Helen situation. It very complicated, but I'll give the nutshell version. Also, there are going to be people who disagree with what I have learned about the events that transpired, as they are in fact dealing with Gods. So nobody actually knows what happened. Ok, there was a wedding, and all of the Gods were invited, except for Discord (or Strife, or something like that) because why would you want Discord at a wedding. So, she was pissed, and went and fetched a golden apple. Then she brought the golden apple, and threw it into the crowd, and said that the fairest shall have it. Three Goddess' tried to claim it, Athena, Hera, and Aphrodite. So, to decide who whould get the Apple, they brought in Paris, who was an exceptionally handsome sheep herder, and incidentally, a long lost son of Priam (I believe he was lost on purpose, cause there was a prophecy of him being the doom of Troy, or some such.) The three Goddess' all offered him things to entice him to choose them. Athena offered wisdom and prowess in battle, and Hera offered him a Kingdom. However, he was already a fairly adequate fighter, and a Prince of Troy, so compared with Aphrodite's offer, those were rather superfolous. Aphrodite offered him the most beautiful woman in the world (never mind that she was already married to Menelaus). And he took that offer. And Helen was A) Abducted, or B) Went willingly. And Menelaus was able to gather so many supporters to go after her, because Helen's father (with Odyesseus' help) had made all the suitors promise to defend the chosen husband. And, lol, after the huge war, Helen want back to Sparta, and by some accounts, had a relatively long life with Menelaus.
3. Whatever jokes should have been made, they are in fact just jokes, which are supposed to be spur of the moment, and it is up to Jeph as to what jokes are made, and IT'S A FREAKING COMIC PEOPLE!!!