Hodr/Hoder is the blind god of winter and darkness in Norse mythology

What if "Hodor" is the name of the Great Other

Hodr/Hoder's brother in Norse mythology is Baldr/Baldur, the god of light

In the first book when Dany is about to give birth she sees a vision
"She glimpsed the shadow of a great wolf, and another like a man wreathed in flames."
Martin has also said the Lord Of Light/R'hllor is loosely based on Zoroastrianism, the religious concept of there being a God Of Good/Light and a God of Evil/Dark

I'm a fucking nerd
