I am a grandson to Rochus Harty.
The information that I have regarding his first wife is that her name was Elizabeth Heintzman, but that info is not cast in stone. Her name (at least in my opinion) is not known for sure.
His second wife was Julianna Weber. Their sixth child was Fred and I am his son.
I have available a few hundred of names of his descendants. So, to answer your question - YES, they did have family.
Looking forward to your reply.
Paul