Are you sure of the dates you listed? My great grandparents had such similar names: Jozef Kaczmarek (b 1859) was married to Antonia Jendrzejciak (b 1866). They had six sons: Franz (Frank), Sylvester, Vincent, Joesph, Edward, William, Tony and a daughter, Pauline. All, we think, were born in Chicago, except Franz who may have been born in Pensylvania. If you need more information, you may e-mail me.