The 1920 census indicates she came to the United States in 1868. First documentation to place her in the Valley is a rebaptism in the Seventeenth ward on 7 January 1869, which was prior to that year's emigration season. Further research is needed to identify the name of the company she traveled with.
In some sources her name is "Johansine Frederike or Frederikki Pedersen". Her death certificate is listed as Frederikki C. Soderberg.