|Title||Maester at Winterfell|
|Died||In or before 283 AC|
|Book(s)||A Dance with Dragons (mentioned)|
Walys was born a bastard son of a Hightower girl and an Archmaester of the Citadel. After forging his chain, he served at Winterfell when Lord Rickard Stark was head of House Stark. Lady Barbrey Ryswell believes that Walys instigated Lord Rickard's "southron ambitions", including the marriage of his son Brandon to Catelyn Tully.