House Lannister
The richest house in the Seven Kingdoms, lords of Casterly Rock and the gold mines beneath it, whose true motto is said to be 'A Lannister always pays his debts.' A golden lion on crimson, descended from Lann the Clever, they hold the Westerlands and command wealth enough to buy armies, crowns, and kings.
The fuller tale
Every great house has an origin myth; the Lannisters' happens to be a swindle. Lann the Clever is said to have talked the Casterlys out of their own Rock by cunning rather than conquest ÔÇö the founding con of a house that would spend three thousand years turning cleverness and gold into the only currency that outlasts armies. By the story's own time the family motto everyone actually uses isn't Hear Me Roar, stamped on their banners beside a golden lion, but a saying with real teeth: a Lannister always pays his debts. It is offered as a boast and lands as a threat, and the house spends the entire tale making sure both readings stay true.
The mines beneath Casterly Rock make the Lannisters the wealthiest house in Westeros, and Tywin Lannister spent his life converting that wealth into something closer to gravity ÔÇö a pull every other house eventually orbits, whether they mean to or not. He inherited a laughingstock and rebuilt it by annihilating the Reynes and Tarbecks so completely that the realm still sings about it a generation later, then spent two decades as Hand of the King propping up a mad monarch's reign with unpaid, unloved competence. His children were raised less as family than as instruments ÔÇö Jaime the sword, Cersei the crown, Tyrion the debt he refused to acknowledge ÔÇö and the house's later triumphs and catastrophes both trace back to a father who mistook obedience for love and never noticed the difference.
No house in the story wins more battles and keeps less. The Red Wedding ends a war and poisons a name for a generation; the Blackwater saves a capital for a king who does not survive his own wedding feast; the wildfire that destroys the Great Sept crowns a queen over a court that no longer exists to be ruled. Every Lannister victory in this tale is a loan against a future the family keeps forgetting it will have to repay ÔÇö and the gold in the Rock's mines runs dry the very season the debts come due, which is either the story's cruelest joke or its most honest piece of accounting.
The children carry three different answers to the same inheritance. Jaime spends the tale trying to become a man his sworn vows can respect rather than the Kingslayer his reputation made him; Cersei spends it proving that a mind as sharp as her father's, denied a legitimate outlet by an accident of birth, will build its own throne out of whatever is lying around ÔÇö fire, spite, and a crown too heavy for the head that finally wears it; Tyrion, denied his family's love from the hour his mother died bearing him, becomes the one Lannister capable of genuine loyalty to someone outside his own name, which both saves him and exiles him from it. By the war's end, of Tywin's three gilded children, two die beneath the ruin of the house that made them and one survives to spend his cleverness in service of somebody else's crown ÔÇö the family motto, settled at last, and not in the family's favor.
The lion sigil was never subtle, and neither was the house it represented: the Lannisters do not hide their appetite for power behind modesty the way the Starks do, or behind courtesy the way the Tyrells do. They simply state the price and expect the realm to pay it. That the realm, in the end, is the one collecting is the whole tragedy compressed into a single coin.
The page and the screen
Both tellings agree on the ledger, but the books itemize the receipts the show never had time to show. Tywin's brutal handling of Tyrion's first marriage ÔÇö the true fate of Tysha, the crofter's daughter Tyrion loved and lost, and the lie Tywin told him about her for a lifetime ÔÇö is a wound the novels dwell in at length and the show largely elides, which softens exactly the detail that makes Tyrion's final act against his father land as inevitable rather than sudden. The books also give Cersei her own point-of-view chapters from partway through the saga, an interior of prophecy, paranoia and self-flattery no camera could fully replicate; the show, needing a coherent final antagonist, streamlines her into something colder and more competent than the woman on the page, who is at least as often her own worst enemy as anyone else's.
