It’s time to journey back to Westeros.

Cersei chose violence. Rhaenyra commandeered dragons. But the protagonist of HBO's new " Game of Thrones " spinoff, "A Knight of the Seven Kingdoms"?

We enter this epoch in Westerosi history via a commoner named Dunk (played by Peter Claffey, "Bad Sisters"), the young, hulking squire to a hedge knight named Ser Arlan of Pennytree (Danny Webb, "Penn...