The first king of Westeros was Aegon the Conqueror who, riding with his sisters Visenya and Rhaenys on their three dragons from their seat, Dragonstone, won the War of Conquest. This memorable war marks the beginning of the timeline (AL for Aegon's Landing) and the Targaryen Dynasty that ruled Westeros for more than 250 years. Aegon established the Targaryen tradition of marrying siblings and other closerelatives by marrying both of his sisters and having a child by each. House Targaryen was overthrown by the Robert Baratheon of Storm's End, who made House Baratheon the new rulers of Westeros during Robert's Rebellion.