I searched through the census records on Ancestry.com to look for Louise Graven. I did not find anything under that name. If she got married at some point, however, she would have changed her name. Here is a possibility from 1900 census records for Minneapolis, Hennepin County: 1900 (Ward 3, Minneapolis: 624 Upton Avenue N) John E. Drevs (or Drews), born March 1854 Denmark, immigrated 1882 Louisa Drevs (or Drews), born February 1856 Norway, immigrated 1880. The record shows her parents were born in Norway. The record also says she had been married 10 years and did not have any children. I did find a Louisa (Louise) Drevs in the 1910 and 1920 censuses, but these entries may be for a different person since (1) the husband in 1910 is Carl, (2) her mother was born in Denmark and (3) the immigration year - which is different in each record - is not 1880. 1910 (Ward 3, Minneapolis, Hennepin County) Carl Drevs, age 58, born Denmark, immigrated 1885 Louisa P. Drevs, age 53, born in Norway. Father born in Norway, mother born in Denmark. She is shown as having immigrated in 1887. They had been married 20 years, no children. 1920 (Ward 12, Minneapolis, Hennepin County) Louise P. Drews, age 63, widow, born in Norway. The record shows an immigration year of 1885 and shows her father was born in Norway and her mother was born in Denmark Possibly someone who has access to more Minneapolis records could look further to see if the Louisa Drevs in the 1900 census might be your Louise Graven. Best regards Paul