I know it's a long shot - but - my great great grandmother was Anna Marie Kratz. She was married to Johann Christian Rahn of Biedenkopf, Hessen Darmstadt, Germany. They came to the USA on the SS Ohio in 1870 with their children, Heinrich, Ernst, and Freidrich and settled in Chicago,IL. I know nothing of the German lineage except that J.C.Rahn's mother was brought over to the US for the last year of her life. Any family tie here?