Date of founding
House Musgood is a vassal house from the Stormlands that holds fealty to House Baratheon.
Davos Seaworth reports to Stannis Baratheon he has managed to secure the support of some noble houses, among them House Musgood.
In the books
In the A Song of Ice and Fire novels, House Musgood has only been mentioned. Jack Musgood was Lord Commander of the Night's Watch during the invasion of Raymun Redbeard of the North.