Joseph- I chose Mateus Ward to play Joseph's role because he has dark hair and eyes, he has appeared in a variety of TV shows and a couple movies and because of his roles he has played.
Mateus has dark brown hair and dark eyes that almost look black, even is they are just brown. Also he has appeared in 9 TV shows and has been the main role in 2 of those, which are Hostages and Murder In First. He has played in 2 movies and one of the roles in the movie Lonely Boy, he played a character who is Young Franky who had schizophrenia, which if you look up the definition, it will say long-term mental disorder of a type involving a breakdown in the relation between thought, emotion, and behavior, leading to faulty perception, inappropriate actions and feelings, withdrawal from reality and personal relationships into fantasy and delusion, and a sense of mental fragmentation. I believe Joseph has a little bit of that disorder in the book because sometimes he has breakdowns like the one he had when Jack's father went behind him and Joseph panicked and ran away, resulting in the milk pail spilling because he had been milking their cow, Rosie.