My informant is an American from New York, whose family originally came from Poland 100 years ago. His grandfather was a baker and his grandmother was a peasant girl.
“In my family, when my relatives are dying, they will always see someone who is dead before them, like they’re calling them. Like when my grandmother died, she saw her husband. (But how do you know about that? They’re dying right?) Yeah, but you know, like, when my grandma was dying, she would say ‘did you see grandpa? Grandpa was here.’ It’s within a few days, that week. And my aunt did that too, ‘I saw Raman’, which is her husband, who died 20 years before. I don’t know, who knows?”
There might be some other scientific explanations on that phenomenon, but I think it also make sense to me that when people are dying their brain uses this way of reasoning to release their fear toward death: there is still a good side about death that you’re gonna meet with your beloved one who has also been dead.