Margaret, We might have a connection. Did your Ingeburg Dorothea Petersen b: August 21, 1846 and her husband, Frederich Broder Petersen b: August 21, 1845 have a son by the name of Peter who married Meta Ericksen in Crawford County, Iowa? Peter and Meta were married March 31, 1910 in Boyer, Iowa. They had two sons; Alvin and Elder? Meta Ericksen was a sister to my grandmother, Ella (Ericksen) Riessen. Jerry Riessen