"Hear Me Roar!"
―Words of House Lannister

House Lannister (in the show, now known as House Lannister of King's Landing) is a great house of Westeros (and, in the show, also a royal house), and the principal house of the Westerlands. The foundations of the house date back to the First Men, going as far back as the Age of Heroes. Before Aegon's conquest, the Lannisters ruled over the Kingdom of the Rock, and after the foundation of the Seven Kingdoms, ruled over the province of the Westerlands. They are the richest house on the continent, with more gold mines than any other house. House Lannister has joint royalty with House Baratheon since the rebellion against Aerys II and later (in the show), goes onto become the royal house. House Lannister have several branches, including House Lannister of Darry and Lannisport.