Renly: "Why is your stag on fire?"
Melisandre: "The King has taken for his sigil the fiery heart of the Lord of Light."
-King Renly Baratheon and Lady Melisandre
House Baratheon of Dragonstone is an extinct cadet branch of the original House Baratheon of Storm's End and was the ruling house of the island of Dragonstone after the defeat of House Targaryen in Robert's Rebellion. Stannis Baratheon, the head of the house and the Lord of Dragonstone, was a claimant to the Iron Throne in the War of the Five Kings.