A lot of elderly people such as him and have a physical handicap that I have met are usually neglected by their family, and have no one. I've seen it a lot, people I know.
It's your decision, but I would have given my first name. I'm also not sure he would have the modern-smarts to use your identity, he's probably from an era where this wasn't as common. Make friends with him or someone else next time something like this happens.
A man that my mother takes care of, his son rarely comes down from Cali to see his father, and when he does he just sits their on his laptop doing business, doesn't visit with him at all. Only just comes down to make himself look good.
A suspected-Aspie I know at work, although not elderly but just over 30, still lives with parents but his parents would only come down to see him when he was in a stroke-induced coma when the doctors had something to say. They were gonna pull the plug on the day his girlfriend was finally allowed to see him, and he woke up while she was speaking to him.