Eva Thome may have been the daughter of my great-great grandaunt, Anna Maria Gilles and her husband Peter Joseph Thome. There's an outside chance that she was the daughter of his second wife, Margaret Eustus. Her grandparents were Johann Josef and Anna Marie Schumacher Thome & Johann Peter and Susanna Glasen (sic: Glaser) Gilles. Her mother Anna Maria was born in 1844 in Bernborn, Rheinland Germany and probably died around 1870 in Johnsburg, Fond du Lac Co., WI. Your grandmother was born around 1870. Eva had three brothers: John (Oct. 22, 1862, Johnsburg WI - Oct. 26, 1946, Meyer, Mitchell IA), Joseph (Apr. 26, 1867, Johnsburg WI - Oct. 11, 1936, Minneapolis MN), William (Mar. 19, 1869, Johnsburg WI - ?), and a sister, Anna Maria (Mrs. John A. Adams) b. Apr 14, 1865, Johnsburg WI - bef. 1920, Stacyville IA. She also had a step-brother, Phillip (Sept. 15, 1875, Stacyville IA - Feb. 19, 1957 Ramsey MN) and a half-sister, Margaret (Oct. 6, 1877, Stacyville IA - Feb. 28, 1952, Stacyville IA). I'll let you know when I find more definite information.