House Sunderland of the Three Sisters
Casa Sunderland de Tres Hermanas
House Sunderland rules the Three Sisters from Sisterton, a scatter of islands in the Bite that owe fealty to House Arryn of the Vale. Its lords have a habit of taking sides in the realm's great quarrels and in the Vale's own disputes, and that habit has shaped their history more than the size of their lands.
Their arms show three women's heads on a wavy blue-and-green field, and their lords style themselves Kings and Lords of the Three Sisters.
Chapter 1
The Dance of the Dragons
129–131 ACBooks only
Rhaenyra TargaryenWhen the Dance of the Dragons broke out, the lord of Sisterton sided with Princess Rhaenyra Targaryen in her claim to the Iron Throne, throwing the Three Sisters in with the black faction.
Chapter 2
The Vale's war of succession
Books only
Jeyne ArrynYears later, Lady Jeyne Arryn died without a clear heir and someone murdered the regent Ser Corwyn Corbray; the Vale fell into a war of succession, and from their islands the Sunderlands backed Ser Arnold Arryn and House Royce.
Chapter 3
The Blackfyre Rebellion
Books only
Later, the lord of the Three Sisters again staked his standing on the crown's favor, backing Daemon Blackfyre in his rebellion against the throne. He was also present at the Tourney at Whitewalls, where support for the Blackfyre cause was quietly building.
