Yep, that's him. He thinks my wife(his daughter) is his wife. He thinks my oldest son is his oldest son often.

My father in law has dementia but is still lucid enough a lot of the time to tell us about it. He said the other day, "It's a weird deal. I can be sitting at my kitchen table and all of a sudden it's my kitchen table from 1975 and everything is 1975."