House Velaryon

House Velaryon of Driftmark rules the island of Driftmark, the largest island of Blackwater Bay in the crownlands. Their castles include Driftmark and High Tide. The head of House Velaryon is titled Lord of the Tides and Master of Driftmark. The Velaryons are sworn to Dragonstone. Their arms depict a silver seahorse on sea green. Their words do not appear in the books, but according to semi-canon sources they are "The Old, the True, the Brave". A traditional name of the Velaryons is Jacaerys.

House Velaryon is of Valyrian descent, and its members often have Valyrian features, such as silver hair, purple eyes, and pale skin.

Origins
House Velaryon is an ancient and proud house, with the blood of old Valyria in its veins. The Velaryons left Valyria before the Targaryens, and settled on the island of Driftmark in the narrow sea. The castle of Driftmark housed their ancient high seat, the Driftwood Throne, which according to legend had been given to them by the Merling King to conclude a pact.

Their close proximity to the Gullet enabled the Velaryons to fill their coffers from trade in the narrow sea and Blackwater Bay. They allied with House Targaryen from Dragonstone and House Celtigar from Claw Isle, both houses of Valyrian descent; While the Velaryons and Celtigars dominated the middle reaches of the narrow sea with their ships, the Targaryens ruled the skies with their dragons.

Princess Viserra Targaryen
The youngest daughter of King Daeron I Targaryen Princess Viserra Targaryen married Lord Aelon Velaryon, they had two sons together Lord Corlys Velaryon and Lord Aelor Velaryon, she was the grandmother of the infamous Ser Maekarys Velaryon.

Princess Daenys Targaryen
Out of love, Daenys married her first-cousin then Ser Aelor Velaryon. They had seven children together: Lord Jacaerys Velaryon; current Master of Driftmark and Lord of the Tides, Ser Daemon Velaryon; former member of the Kingsguard to his cousin Jaehaerys II Targaryen and Aenar I Targaryen, Maelor Velaryon; Lord Commander of the Night's Watch, Lady Naerys Velaryon; wife of Ser Swayan Tarth and mother to his four sons, Lady Alyssa Velaryon; third-wife of Lord Tyland Lannister and mother to three of his three sons, Lady Shiera Velaryon; wife of Ser Baron Hightower, Ser Maekarys Velaryon; former master of laws and Lord Commander of the City Watch of King's Landing, now master-at-arms on Dragonstone (island), husband of Princess Visenya Targaryen and father to three of her four children.

Aenar I Targaryen
The eldest daughter of Lord Corlys Velaryon Lady Saera Velaryon married her second-cousin Prince Aenar Targaryen. Their marriage was happy and fruitful, she gave him five children.

Princess Visenya Targaryen
Ser Maekarys Velaryon married his first-cousin-once-removed, they secretly married in 285 AC on Dragonstone, the two had three sons together.