I love this theory. Birgitte, unfortuneatly is slain in battle, and nobody knows her fate... Then Rand and Elayne get married (which they will, btw, Min tells Elayne that she will have to share her _husband_ with two other women)and they have a daughter. They name their daughter after the dead warder. Birgitte grows up and marries Olver, etc etc etc The only problem with that is that Birgitte would probably tell Egwene in TAR if she managed to get back into it after her death... oh well, maybe she finially agrees to abide by the rules or something.