Everyone knows that George R.R. Martin is not only a great writer, but also a great borrower. He has borrowed many ideas from Robin Hobb, Tad Williams and Michael Moorcock.
But I've always wondered from which book he borrowed his White Walkers and the undead who serve them. In my opinion, he used a scene from the book "To Green Tower Angel" by Tad Williams. In one chapter of that book, a combined army of Humans and Sithi storm Naglimund, which had previously been captured by the Norns. Among the defenders of the fortress, the humans suddenly see soldiers who once served King Elias and were captured by the Norns. When Prince Jiriki shoots one of these soldiers and he falls from the wall, everyone realises that he is long dead. It was the magic of the Norn magician Ahenabi that made the dead soldiers move.
I think Martin expanded and developed that idea. The White Walkers are obviously "descended" from Ted Williams' Norns (although the Norns are more human-looking and can even have children with human women, like Nezeru in "The Last King of the Osten Ard"), and their undead warriors are "descended", so to speak, from the poor soldiers killed by the Norns at the fall of Naglimund and resurrected by the evil Ahenabi. But I'm not really sure if I'm right.
But I've always wondered from which book he borrowed his White Walkers and the undead who serve them. In my opinion, he used a scene from the book "To Green Tower Angel" by Tad Williams. In one chapter of that book, a combined army of Humans and Sithi storm Naglimund, which had previously been captured by the Norns. Among the defenders of the fortress, the humans suddenly see soldiers who once served King Elias and were captured by the Norns. When Prince Jiriki shoots one of these soldiers and he falls from the wall, everyone realises that he is long dead. It was the magic of the Norn magician Ahenabi that made the dead soldiers move.
I think Martin expanded and developed that idea. The White Walkers are obviously "descended" from Ted Williams' Norns (although the Norns are more human-looking and can even have children with human women, like Nezeru in "The Last King of the Osten Ard"), and their undead warriors are "descended", so to speak, from the poor soldiers killed by the Norns at the fall of Naglimund and resurrected by the evil Ahenabi. But I'm not really sure if I'm right.