I am looking for information regarding my great-great-grandmother, Catherine Rademacher, born April 5, 1849, Grothusemdan, Germany, and married to Anton Oltmans. She died Feb. 15, 1925 in Cortland, Nebraska. Their son, Dietrich Anton Oltmans, born 1871, was my great-grandfather. I don't have any information on other children they may have had. I'm happy to share any information. Thanks.