|Died||In 299 AC, at Winterfell|
|Book(s)|| A Clash of Kings (Appears)|
A Dance with Dragons (Mentioned)
Gelmarr, also known as Gelmarr the Grim, is an ironborn raider.
A Clash of Kings
Gelmarr is a part of Theon Greyjoy's crew when it raids the Stony Shore and captures Winterfell. When Bran and Rickon Stark go missing, Gelmarr is a part of the search party. Gelmarr, along with Aggar and Gynir, goes with Theon and Reek to the mill at the Acorn Water, where he kills the miller's wife with his axe. After the search party returns to Winterfell with the bodies of two children, Gelmarr dies that night, falling down some steps and breaking his neck. Aggar and Gynir are also found dead in the following days. Although he has no evidence, Theon condemns Farlen for the deaths and personally executes the kennelmaster. Theon later recollects that Reek was responsible for the murders.