Lannister Name Generator

For men: Tywin, Tyrion, Tygett, Tytos, Tybolt, Tyland, Tywald, Gerold, Gerion, Lancel, Loreon, Loren, Jaime, Jason, Kevan, Damon, Daven, Stafford, Tion, Tommen and Tyrek. For women: Cersei, Joanna, Johanna, Genna, Lanna, Janei, Myrielle, Myrcella, Cerenna, Cerelle, Rohanne, Tya, Tyshara, Alysanne and Rosamund. Tommen and Lancel both served several Kings of the Rock before the Conquest.

Every region of Westeros gives acknowledged bastards a surname from its landscape, and in the Westerlands that name is Hill, after the hill country around Casterly Rock. Joy Hill, Gerion Lannister's daughter by a common woman, is the canon example; a Hill only becomes a Lannister if the crown legitimises them.

Both share Lann the Clever's blood. The Lannisters of Casterly Rock are the main line who rule the Westerlands; the Lannisters of Lannisport are a cadet branch that governs the port city at the foot of the Rock and supplies knights, ship captains and minor lords. Either branch uses the same pool of first names, so any name here fits a Lannisport cousin.

Yes. The original names here are free to use anywhere, and canon Lannister names are fine for fan fiction, RPG campaigns and party characters. House Lannister itself belongs to George R.R. Martin and HBO, so keep Lannister-branded characters out of commercial fiction.