Marshall really doesn't care about who is what kind of blood. As long as someone is cool right? Money never entered his mind either. He was probably one of the wealthier people at Hogwarts but he honestly never even thought about it much.

He ran his hand through his hair awkwardly and chuckled. He didn't mean to just suddenly pile all of his life into Arthur's lap.
"Sorry! I can be long winded. I don't have company much, let alone someone that I don't have to hide from. I probably shouldn't just dump my life story onto you like that. I didn't mean to be rude."
He paused as he thought about something that just came to him.
"You could always tell me your life story. I still don't know that much about you."