Revealing mistake: In the scene where the king and his entourage are walking through the crowd, someone in the crowd (right side) is wearing a watch on his left hand while applauding.
Would You Know My Name - S2-E1
Character mistake: In season 1, episode 8, Roland says that his father died when his father was 36. But in the first episode of season 2, Joan says that she called his mom and dad.