Yes, I'm sure it was incredibly tragic for the older kids, especially Carl. Ira's wife died when he was still a teenager, so he lost yet another parental figure young. I have seen family photos of Carl as a teen with young Lee and it's obvious he loved Lee very much. He was, after all, Carl's only direct link to his original family. I've heard different reasons why they were split up, but except for Betty, no one who might be able to tell the actual story is still around and Carl himself died in the late '90s. By the time Lee put the pieces of his story together, Carl was married with his own family, so I don't think they ever had a chance to really become brothers.