Master-at-arms at Dragonstone
Fire & Blood (mentioned)|
The Sons of the Dragon (mentioned)
On the account of his reputation as one of the deadliest knights in the Seven Kingdoms, Ser Gawen was chosen by Queen Visenya Targaryen as master-at-arms for her son, Prince Maegor Targaryen, on Dragonstone. Under Corbray, Prince Maegor took to swordplay at once.