Thank you so much for your reply. Christ Hegdahl married Tina A. Berg on 8 Jul 1893 at St Olaf Luthern Church at 2901 Emerson in Minneapolis. I have a photo of the handwritten church record. I have not found any documentation of a different earlier name though her apparently two children, Bessie Berg born 1 May 1891, and another pre-1893 unknown, would beg for that to exist. Do you know the source of the Peterson/Pedersdatter information? I have not found any sourced indications of that and am very anxious to locate my great grandmother's origins in Norway. Given the other Bertina/Peterson connection, could attributing Peterson to her be another researcher's mix-up. I also am aware of the other Bertina in Minnesota during that time and have been tiptoeing through the references with that in mind.