I believe from more work with trees on ancestry.com that they are likely Harm Lubben and Cornelia (Aden) Lubben. 2 of their daughters Meta and Antje, married Schuster boys, John (lived in Minonk, IL) and Lambert (lived in Pickrell, NE) respectively. I have some old letters that have helped put pieces together, but there are several pieces missing. If anyone has any links to Cornelia (Aden) Lubben, who seems to have married 2 Lubbens, or any info about her husbands, Menne or Harm, I would be very interested in hearing it. I have photos of people who greatly resemble who I believe is Cornelia Aden Lubben. Any help is appreciated!