I don't know much of anything of my brother's childhood. He was ten when i was born, and as i became more aware (4 to 6 years old), he was a teenager and spent as little time at home and with the family as he could. I was 6 when he left for college at 17. Then i saw him for just a few days each year, and then less and less.
I know what he has told me and there are the larger family events i know. I'm sure he craved his father's attention and didn't get it. And he might have felt he lost his mother's attention, also, when i was born.