Yeah, I'm with Umbran. Shakespeare, followed by Athurian & Robin Hood, followed by maybe Dickens (how many A Christmas Carols are there?)
Again, like he said - that's Western stuff. I'm not familiar enough with non-Western stuff to guess. So for Western stuff, it's gonna be old, popular Western stuff, which largely means British stuff from a long time ago, with some exceptions.
Oh, and the Bible, of course. Lots of versions of that! And Caesar.
So my guess, mainly Western except the Biblical stuff (so there could be vast swathes of non-western stuff I'm missing):
Shakespearian stuff
Biblical stuff (Jesus, Moses, etc.)
Arthurian stuff
Robin Hood
Caesar (not inc. Shakespearian interpretations of him)
Dickens' stuff