From A Wiki of Ice and Fire
Great Wyk is the largest of the islands that make up the Iron Islands.
Some of the noble houses found upon the island include House Merlyn, House Sparr, House Goodbrother, and House Farwynd.
Hammerhorn, the seat of the main line of House Goodbrother, is located in the Hardstone Hills. The Merlyns reside in Pebbleton, while the Farwynds live at Sealskin Point.
Stannis Baratheon subdued Great Wyk during the Greyjoy Rebellion.
A Dance with Dragons
After the selection of Euron Greyjoy at the kingsmoot, Aeron Greyjoy is said to have gone into hiding on Great Wyk.
References and Notes