The World of Ice & Fire (mentioned)|
The Sons of the Dragon (mentioned)
Fire & Blood (mentioned)
Walter fought for the first Vulture King during the reign of King Aenys I Targaryen. During the Vulture Hunt, at the battle at Stonehelm, Walter was captured by Lord Orys Baratheon. The Wyl of Wyl had chopped off Orys's sword hand during the First Dornish War, and in retaliation Orys chopped off his son Walter's sword hand, then his other hand, followed by both feet. Orys deemed this "usury".