...Yeah, I'm bad at this. Uh - there's a skill Servants can have. Innocent Monster. It's what happens when you're subjected to rumors about something you were never actually in life. So your Servant form takes those traits.
Like Vlad III. He most definitely wasn't a Dead Apostle or some other vampire in life - probably - but I bet because of Bram Stoker, if you summon the hero of Wallachia you'll instead get Dracula.
Kitchen
Homura: (looks over at Muramasa) ...In a way. I have shared memories with a Servant who once fought in a Holy Grail War with her. And as well...it seems in our world "King" Arthur was a Magical Girl.
Sayaka: Oh yeah! She was here like a long time ago. (pause) Wonder how she's doing.
The damned queen and the relentless knight.

Kitchen
Homura: (goes back to finish her cup of tea)
Sayaka: (lets it go and adjusts her position at the table) Did you guys drink a lot of sake back then?
The damned queen and the relentless knight.