[quote=@Raineh Daze]
Hah, I don't think it's that Secret of Pedigree applies to Lancelot because of the logic bomb of the NP that hides her identity being the only thing that anyone ever saw her by. Just going by his GO line of dialogue where he doesn't believe it's Mordred at first, presumably because out of armour... xD
[/quote]

Now that I think about it, I guess so. Nevertheless, pulling out Clarent should be enough for Lancelot to know who he's talking to, even if that sword don't exactly belong to her.