Who is Roy from Going to Meet the Man and what is their importance?

Roy is the second son in the Grimes family and his father's first born son. Roy is the favored son and often gets away with things that John is unable to, or is actually blamed for. When Roy goes to the rockpile to play with his friends, he does not think about anyone else, especially John. Roy is injured and comes home crying hysterically with a small cut on his forehead. In this story the boys' father does not blame Roy even though it was his choice to go to the rockpile. Instead, the father blames John for not telling his mother that Roy had left or stopping Roy in the first place.