House of the Dragon has been ramping up its promises of war and mayhem as its June return inches closer. And, yes, dragons and bloodthirsty Targaryens are never not entertaining. But the Westeros show that a lot of George R.R. Martin fans are really longing to see more of is A Knight of the Seven Kingdoms , which wrapped up its delightful first season earlier this year. Season two is happening— weather delays be damned —and HBO has already revealed casting for three key roles . Now, showrunner Ira Parker is teasing what the new characters will be bringing to the table. Martin readers who are familiar with “The Sworn Sword” already have impressions of Lady Rohanne, aka the Red Widow (who’ll be played by Lucy Boynton), Ser Eustace Osgrey (Peter Mullan), and Ser Bennis of the Brown Shield (Babou Ceesay), but seeing them come to life is an exciting prospect. “She has a way of making Dunk uncomfortable, which is very good for us,” Parker said to Entertainment Weekly about Lady Rohanne.…