It COULD be my last post with Alanna, but does not necessarily have to be. I was pretty pleased with it, and it does seem pretty conclusionary ^^ But it does seem like Lance and Alanna should have some sort of final words. So like I said, it COULD be the last one for Alanna in this game, but does not have to be.
And I'm glad you liked the symbolism

It's a personal favorite literary technique of mine. Woot!
Now, what I know of the actual Tristan and Iseult (Yseult, Isolde, however you please) story:
Brief facts: Tristan is cornish, Iseult is Irish. This story is actually older than and probably influence the Lancelot/Guinevere/Arthur triangle. Depending on whose version you read, the potion lasts either a lifetime or three years. Does it matter? Not particularly, but it's fun to know.
The summary:
After beating up some ugly knight, Tristan is considered such a pimpin' He-man by his Uncle and newly crowned King Mark that he is chosen to dash off and pick Mark up a babe for a queen. He's told to get the prettiest Irish lass, so he goes to Ireland and ends up having to slay a dragon that was going to eat this totally hot chick with blond hair and green eyes who winds up being the woman Tristan brings back to be the Cornish Queen. On the boat ride back, however, fair Iseult's mother-aunt-some-magical-relative brews a love potion for the lass to drink to ensure that she loves and is loyal to her new husband. Shockingly enough, with two hot young people on the ship they accidentally drink it and are stricken in love. Oops!
Iseult gets to Cornland and becomes the queen, meanwhile she and Mark's nephew consummate like bunnies. Even though this is normally considered bad, the couple are freed from responsibility because they drank the magic bubbly and have no choice but to shack up. Mark's advisers repeatedly try to have them caught and prosecuted and sued for emotional duress, but phail every time because Iseult and Tristan are just too clever for them. Oh, and despite the affair and all Mark, Iseult and Tristain all hold love for each other as father figure, son, kind husband who doesn't have to be, wife, lover, etc. But Mark eventually discovers the affair and tries to catch them, and when he does he decides to have Tristan hung and Iseult put through
a trial by ordeal and then tossed up in a leper colony (despite the fact that he wuvs them so much). Tristan escapes in manly fashion and rescues Iseult, then they dash away and live in a forest next door to the castle rather than, say, moving to a different country. Shockingly enough, Mark finds them again but they all make their peace and Tristan agrees to return Iseult to her tender loving hubby and leave the country.
At this point, some stories have Mark suddenly shove a poisoned lance into his nephew (who was playing a harp for Iseult), who then dies, and then Iseult of course has no use in living without him so she dies to.
In other versions, Tristan then runs along to Brittany, where he marries some other hot chick who is also named Iseult but has dark hair and white hands. He doesn't love her, of course, but she's hot and named Iseult. Close enough.
Eventually Tristan is stabbed with the poison lance, either while saving some OTHER hot chick from six mean knights or just in casual war by someone with a poison lance on hand, but the ending is pretty much the same. Tristan is poisoning to death, so he asks his buddy Kahedin to go back and retrieve Iseult (the one he likes) thinking that she can heal him with her luffles, and says that if he has her on the return sail then to put up white sails, and if not then to put up black sails. Meanwhile he has his wife, who apparently doesn't mind the fact that her husband doesn't love her, care for him and sit by his side to wait for the other woman to arrive.
Iseult agrees to come along and save Tristan, and they come back with white sails. But sh-sh-sh-shock! Iseult the black haired chick IS bothered by the fact that her husband doesn't love her! So she lies and says that the sails are black and Tristan dies of grief. Iseult the Irish babe comes and sees him dead, goes ':(' and promptly dies, too. For some reason they're buried next to Mark's castle in the garden where they probably did it at least 9000 times, and out of their graves grow hazel and honeysuckle that intertwine and cannot be separated (Mark tries to cut them three times but they keep growing back the same so he leaves them).
In some stories, Tristan and Iseult do not practice planned parenthood techniques and have some spawn. Sometimes it's a son and daughter whom they creatively named after themselves, who go on to have adventures of their own. There's one story called Ysaie the Sad, with the title character being their son, who does stuff with the fay-king Oberon, marries some chick named Martha, and has a son named Mark (lawl wut?).
Teh end!