A daughter of the Lannisters of Casterly Rock who was wed to Lord Gowen Baratheon of Storm's End some generations before the reign of Robert I Baratheon, and the last Lannister to wed a Baratheon before her good-niece Cersei was given to the new king at the close of Robert's Rebellion. She bore Gowen a single son, who died in infancy, and the marriage left no further mark on the chronicles of either house.

Tya Lannister
Family
- Spouses
- Gowen Baratheon
