Jacob Jochum was my great-grandfather. his son George was my grandfather. I never knew him, because he left my father ( Alfred ) in the care of his maternal grandparents after his wife died in 1909. I was born and raised in Dubuque. I would be interested in hearing more. My father didn't know much about his family, but I understood him to say that his people on his father's side came from east Prussia, in what was once Poland.