Just a quick question. I've seen in multiple spots on the wiki that Fionn was summoned as the Lancer of the Third Holy Grail War of Fate/Stay Night wars, but I'm not sure where this was stated and no source is ever given. I'm fully willing to believe it, just want to make sure there's an actual source for it and its not just an assumption, so if anyone could point me to where its been stated that'd be appreciated.