[@KoL] [quote]
And here was I being a fool all this time and thinking that it was because King Arthur was a literate person (given that he was a noble) that had a Celtic Druid older than dirt as teacher and thereby was bound to know, y'kow? Legends from the very archipelago she was born in...

Because it's not like Ireland is so very far from Corwall and the rest of the Brittish islands.

Well, such is life. You always learn new things everyday.[/quote]

Cuchulain and Diarmuid also recognize Arthur, Diarmuid even saying that he has anticipated facing her. Their legends predate Arthur's by some time, they know of her because of the information that the grail has given them. While its possible that Arthur knew of both of them from life due to Merlins teachings even if she had never learned she would know now, because of the general knowledge that they receive from the grail.