House Estermont

House Estermontis a vassal house from the Stormlands that holds fealty to House Baratheon. Their seat is Greenstone, a castle located on the island of Estermont in Shipbreaker Bay. Their sigil is a dark green sea turtle on a field of pale green.

Known Members

 * Lady {Cassana Estermont}, wife of Lord Steffon Baratheon of Storm's End and mother of Robert, Stannis, and Renly Baratheon.

Season 2
House Estermont, along with most noble houses of the Stormlands, pledge support to Renly Baratheon's claim to the Iron Throne. Following the death of Renly, the Estermonts go over to Stannis and participate in the Battle of the Blackwater.

In the books
In the A Song of Ice and Fire novels, House Estermont is ruled by Lord Eldon Estermont, a very old man and the brother of Lady Cassana Estermont, making him uncle to Robert, Stannis, and Renly. After the Battle of Blackwater Bay Lord Eldon bends the knee to Joffrey, though part of the family remains loyal to Stannis.