Sigil: A gold-banded black warhorn on red.

House Goodbrother is a sworn bannerhouse of House Greyjoy. One of the smaller houses, the Goodbrothers of Great Wyk are known for wearing goat hair sashes. The house is divided into several branches based on which island they call home. The Goodbrothers of Great Wyk have a castle named Hammerhorn. There are other branches of Goodbrother on Old Wyk and on Orkmont.