Yeah that was me. You were asking this.
If using the characters, Lady Guenevere, King Arthur and Merlin poses a problem, then I could start the story in May 2006 and refer to the character as the vampire slayer Guen (Gwen).
I responded there was no problem with using historical figures as slayers. But now that I reread both posts I see you're talking about using 2 slayers in the same story.
The problem is there's a format for titling. You'll see it on all the other stories. It goes Slayer name, then date time served as slayer.
So if you're using two in a time travel kind of story it would go something like Hope and Guinevere, May 17 to July 30 2007, and May 16 to May 18 1067
You could then sub-title it inside the thread with your title - They Offered Me Friendhip.
The pic would be tough. I'll give you a pictorial example. I'm not saying these are the pics you'd use.
Basically you've got Hope
and Guinevere
I guess you could put them both together, something like this
That's kind of ugly though don't you think? You could maybe contact one of the banner making artists and request something.
This of course is all contingent on whether this can be done as a Tales of the Slayer story. I'm not sure if I spoke to soon when I said there shouldn't be a problem. I was thinking your only concern was the historical slayer thing.
Buffy will get back to you on that one.