Anna Knutson was born 17 August 1851 in Sigdal, Buskerud, Norway to Knut Pederson and Anne (given name) and died 11 February 1924 in Green Valley, Wisconsin, United States of unspecified causes. She married Simon Fredrickson (1852-1935) circa 1883 .
Oral history from Otto Fredrickson says that Tilly was not Simon's daughter, born before the couple was married and raised as his own. Her father was unknown to Otto. Lucille
- 1900 census shows Anna as having 8 children, 8 living. (Eight children are listed on that page, Tillie is not among them.)
- 1910 census shows Anna as having 9 children, 8 living. (Nils and Otto are only ones listed at home. Benjamin (1901-1905) is listed in FamilySearch.)