House Swann is a noble house from The Stormlands. Their seat is the castle of Stonehelm. Their sigil is argent and sable, two swans counter changed. The current head of the house is Lord Gulian Swann.
They are an old house, renowned for caution and pride. They have ruled Stonehelm for longer than any can remember. They control the Slayne, and are believed to be the second most powerful house of the region. The Swanns and the Carons argue over who is the eldest of the Marcher Lords.
The fool of Lord Swann named Prince Matarys Targaryen as the "even younger prince." Lord Gawen Swann fought at the Tourney of Ashford Meadow, losing to Prince Valarr Targaryen. Gawen ignored the request of Ser Duncan the Tall to fight in his Trial by Seven.