A little more background info....
According to census records, Peter M. Meyers was Born in Norway Jun 1845. His wife, Ellen Aanonsdatter was born in Wisconsin in Apr 1846. Her mother lived with them in 1880 and 1900. Her name was Bergitte Aanonsen Ramsberg (Born Nov 1813 in Norway).
Peter arrived in America in 1846. He had 10 children with Ellen. The first were born in Wisconsin, those born after 1878 were Born in Minnesota.
In the 1880 census, Erdor is listed as "Olaus".