User blog comment:DarkSaiyanMitsubi/Empire or Stormcloaks?/@comment-4976111-20121012013056/@comment-3492791-20121014165337

Actually I was just thinking about this, and I realized something. Talos was a "real" person. No one questions that he existed, only his divinity, like Jesus.

Tiber was a pretty important Dragonborn. It's not surprising that someone might name a magical shouting amulet after him.