The Elder Scrolls XVI: Sworn to Carry Your Burdens

[InvisibleBison]

So... What do people think about the theory that the horn of Jorgon Wingcaller being made from Paarthurnax's missing horn?

I don't think the shape of the Horn is the same as that of Paarthurnax's horn. Also, I find it likely that Jurgen got his horn when he was a war-leader of the Nords, before he founded the Way of the Voice and (presumably) before he met Paarthurnax.