I think Edoras/Rohan might be a reference to Breton Celtic horse culture. The Lords of Brittany, the House of Rohan, traced their ancestry to Conan Meriadoc.

I think Edoras/Rohan might be a reference to Breton Celtic horse culture. The Lords of Brittany, the House of Rohan, traced their ancestry to Conan Meriadoc. In Lotr, Meriadoc Brandybuck is the halfling who swears allegiance to King Theoden of Rohan in Edoras. The analogy doesn't go too far though, as the Rohirrim came from the vales of Anduin, near the Grey Mountains, while Conan's settlement, if it happened, was on return from defeat outside Rome. He was from Wales before that.