On TVTropes, I saw mention that the legion that is in Skyrim at the time of TES5 is the "Fourth". Is there any in-game texts or dialog that say something to that effect or was it just heresay that some troper mistook for fact?

EDIT: Hmm... maybe this'd be better suited to one of the Skyrim forums. Or not... It seems kinda vague where it'd best be put.

no its in game

I don't remember any in-game source saying it's the fourth. Though I do recall the TES wiki saying it is. (But it's best not to trust that site if you're searching for lore.) Can anyone direct me to when it is mentioned in-game that it's the fourth Legion in Skyrim?