Dorna Lannister

Dorna Lannister is a character mentioned in Game of Thrones but has not appeared yet. She is the wife of Ser Kevan Lannister. Their son Lancel Lannister was King Robert's squire before his death.

Season 1
King Robert informs Lancel that his mother was a whore with a fat arse, to Lancel's discomfort and distress. Robert was angry with Lancel and presumably not offering a reliable appraisal of Dorna Lannister's character and appearance.