I'm sorry for your loss. Yes, you can absolutely claim him. You need to say that he lived with your all year in the program. You don't mention his age or if he had a job at any point in 2018. If he was under 19, or under 24 and a full time student, he is considered a child. If he was older than 18 and not in school, he would have had to earn less than $4,150.
