Production has commenced on the HBO Original drama series A Knight of the Seven Kingdoms in Belfast, Ireland. The series is an adaptation of George R.R. Martin’s novella The Hedge Knight.

A century before the events of Game of Thrones, two unlikely heroes wandered Westeros… a young, naïve but courageous knight, Ser Duncan the Tall, and his diminutive squire, Egg.

Set in an age when the Targaryen line still holds the Iron Throne, and the memory of the last dragon has not yet passed from living memory, great destinies, powerful foes, and dangerous exploits all await these improbable and incomparable friends.

The newly announced cast includes Finn Bennett as Aerion Targaryen, Bertie Carvel as Baelor Targaryen, Tanzyn Crawford as Tanselle, Daniel Ings as Ser Lyonel Baratheon, and Sam Spruell as Maekar Targaryen.

They join the cast of George R.R. Martin and Ira Parker’s A Knight of the Seven Kingdoms,...