Here Be Pirates!
House Kundarak is a dwarven dragonmarked house throughout Khorvaire, though their most preciously guarded vaults lie beneath the bedrock of Eberron itself in the Mror Holds. The dwarves of House Kundarak also manage the large island prison of Dreadhold with only one successful escape ever recorded, with the fugitives being hunted down heavily by other houses.
House Kundarak possesses the Mark of Warding. This mark grants various magical benefits that allow its bearers to protect things of great value, giving Kundarak a distinct place among the noble and elite of Khorvaire society.