Meraxes, the dragon of Aegon I's sister-wife Rhaenys. His skull is stored in the Red Keep.

Vhagar, the dragon of Aegon I's sister-wife Visenya. His skull is stored in the Red Keep.

Silverwing, the dragon of Queen Alysanne Targaryen, the sister-wife of King Jaehaerys I Targaryen. Alysanne rode Silverwing to Winterfell on a royal visit and, on a whim, then flew him all the way to the Wall to visit the Night's Watch.

Vermithrax, mentioned by Viserys Targaryen as the name of one of the dragons whose skull is stored in the Red Keep.

Ghiscar, mentioned by Viserys Targaryen as the name of one of the dragons whose skull is stored in the Red Keep. Apparently named after the Ghiscar region.

Valrion - mentioned by Viserys Targaryen as the name of one of the dragons whose skull is stored in the Red Keep.

Esovius - mentioned by Viserys Targaryen as the name of one of the dragons whose skull is stored in the Red Keep.

Archonae - mentioned by Viserys Targaryen as the name of one of the dragons whose skull is stored in the Red Keep.