HBO's Game of Thrones featured sweeping storylines defined by courtroom drama, noble houses, and dark fantasy, with House Lannister among the series' most important players. The current House of the Dragon prequel series depicts a time when the lions of Casterly Rock weren't quite as prominent, but the flagship live-action series makes them nearly front and center from Tywin Lannister to Tyrion Lannister.
Source:https://www.cbr.com/game-of-thrones-lannister-family-tree/