I do not know what port my Grandfather, John Biever/Biewer left from near Borg, Prussia, however, he came through the Port of Detroit in June 1873. He was on his way to Wisconsin. Since Detroit is on the Great Lakes and borders Canada, I assume he came down the St. Lawrence River. I have no idea the name of the boat. He was only 14 traveling with his sister Mary. Just adding information since the Great Lake Ports were not mentioned. Was there a special reason why they came through Great Lake Ports. Alice