Who is Sam Hall from The Risk Pool and what is their importance?

Sam Hall is Ned's father. He is a war veteran and not a model father or a model husband. He is a good looking, strong man who wants to do nothing but celebrate life when he returns from the war. He is unable to hold a steady job and instead chooses to do seasonal work and gamble and hang out at the bars around Mohawk. His wife, Jenny, wants him to settle down to real life when they have a child, but Sam is not able to do it. When Jenny tries to move on without him, he harasses her and makes her life hell, refusing to give her a divorce until many years later.