"He was the toughest on Chuck." - How was he the toughest on Chuck? Was there any physical abuse?
"He came back with a puppy and my mom wouldn't let him in the house." - What went through your mind at that time? Did you want him to come back and live with your family then, or were you relieved when left for the last time?
After completing the interviews, I feel like I'm getting a pretty good snapshot of his family life through his young eyes, but I think my direction will also turn to how this experience has shaped him as a father today. What impact has his childhood made on his parenting?