I'm looking for any information leading to my great-great-grandmother Marie Nielson. She came over from Denmark between 1889-1899. Some of her children are as follows: Carrie, Tina, Mary, Lena, Otto August, and Martin Kristian. Martin Kristian Nielson is my great grand father. The story goes that Martin didn't know who his father was.
Otto, whom change his name to Nelson after marrying his step sister Lillian Sorenson. Apparently, Marie married either Jens or Nels Sorenson in North Dakota. Now Otto's son did research before dying and claims that Marie's husband in Denmark ... a Mr. Nielson was a felon, whom committed murder and couldn't come over to America. While Martin always claim ed a friend named Mr. Nielson helped Marie over to America which is why we were Nielson's. I believe she was born in Denmark around 1850, and the only thing I have on her death is a letter from her daughter Carrie in Wyoming stating that she died on Feb 20, but no year is present on letter. This would be a big link to my past. I would appreciate any help at all. My tree is public. Thank you much.