Unless stated otherwise, all information herein is taken from A Memory of Light, Chapter 9.
Ragon is a man who died fighting with Lan Mandragoran's forces at Tarwin's Gap at the Last Battle. He charged his horse at thirty Trollocs to give other men time to get away. He kicked a Trolloc in the face as they pulled him off his horse.
Prince Kaisel tells his men about Ragon to raise their spirits. He says Ragon's sacrifice probably saved a dozen men's lives.
Ragon is probably a Borderlander.