(Photo: Steffan Hill/HBO)

Seven actors have joined the cast of the A Knight of the Seven Kingdoms series, including an actor to play Daeron Targaryen. Henry Ashton is taking on the role, which has been mentioned but not seen in House of the Dragon on HBO. By the time of Knight, the character is called Daeron the Drunken and is known for having prophetic dreams.

The new additions will join the previously revealed cast of Peter Claffey, Dexter Sol, Finn Bennett, Bertie Carvel, Tanzyn Crawford, Daniel Ings, and Sam Spruell. These two Game of Thrones prequel series are set 100 years apart, so viewers will likely see different people and characters in the timeline.

THR revealed the others cast in the prequel series:

• Edward Ashley (Masters of the Air) as Ser Steffon Fossoway.
• Youssef Kerkour (House of Gucci) as Steely Pate.
• Daniel Monks (Kaos) as Ser Manfred Dondarrion.
• Shaun Thomas (How to Have Sex) as Raymun Fossoway.
• Tom Vaughan-Lawlor (Avengers: Infinity War) as Plummer.
• Danny Webb (The Regime) as Ser Arlan of Pennytree.

Six episodes are being produced for the first season of the fantasy series. HBO described the series as follows:

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 premiere date for this new series will be announced later.

What do you think? Are you planning to watch this new HBO series when it arrives?