The Complete Guide to All 21 Major Houses on Game of Thrones

Location: Dorne
Motto: "Unbowed, Unbent, Unbroken"
Sigil: Red sun pierced by a golden spear on an orange field
Major members:

• The Sand Snakes: Obara, Tyene, and Nymeria Sand, bastard daughters of Oberyn Martell and Ellaria Sand
• Oberyn Martell, brother of King Doran. Killed by the Mountain — Deceased
• Doran Martell, former Prince of Dorne and head of House Martell. Killed by Ellaria Sand — Deceased
• Trystane Martell, son of Prince Doran and heir to Dorne. Killed by the Sand Snakes — Deceased

Why They Matter:
Technically Dorne has gone the way of the Baratheons, with the murder of both Prince Doran and his heir, Trystane, in season six. However, Ellaria Sand and the Sand Snakes have basically said "IDGAF" to the idea of provoking war with Westeros (hence the whole killing Myrcella thing) and vowed to be stronger than Dorne's previous rulers. With Ellaria ruling, she appears to be allied with Daenerys.