Ser Andrew Estermont is a knight of House Estermont, the only son of Lomas Estermont and former squire of Lord Stannis Baratheon. He is tall with a long, pointy beard and bushy brows.
He is faithful to Stannis Baratheon and a friend of Ser Davos Seaworth. He commands Stannis's rearguard during the Battle of the Blackwater, which allows the king to escape and avoid that a rout.
Ser Andrew supports Lord Davos Seaworth and escorts Edric Storm when he leaves Dragonstone in order to protect him from Melisandre's fires.