|Book(s)||A Clash of Kings|
Werlag is an ironborn raider sworn to House Greyjoy.
A Clash of Kings
Werlag is among the ironborn who raid the Stony Shore. Werlag is a part of the ironborn raiding party that Theon Greyjoy leads to take Winterfell. He remains with Theon after the Northmen come to retake the castle. He is presumably killed when the Bolton men sack Winterfell.