John Eckstein born in Libkov, Bohemia in 1821 emigrated to Kewaunee County in 1876. I am in possession of a Land Grant selling 40 acres in Carlton Township in 1875 (dated 15 Sep 1875. The Austrian Passport and Ship's Ticket are dated so it would appear he could not have been in the US in September 1875. Was it possible for someone to purchase land while not yet in the US?
A 1912 map of Carlton Township shows a tract of 80 acres belonging to John Eckstein.
This particular farm was tended by his son also John well into the 20th century.