As plausible as that sounds, I guess I personally am unsure what that would bring to the Treyburn plotline... Perhaps I'm misunderstanding something, but from your description, it seems the character would not know anything about the Treyburns (and may not know she's a Treyburn, for that matter), and she would not know anything about the other Treyburns. I guess I just really don't see how a not-Treyburn Treyburn would add an RPable element to the family.