Teresa, Emma Johnson, Magnus Johnson's sister, married Anders (Andrew) Nelson and lived in Cherokee County, Iowa. Their daughter Hannah married Ernest Swanson. She died at quite a young age leaving 5 children. The oldest girl, Helga, is my husband's mother. While I am not sure, it is most likely that Magnus is buried in a Cherokee County cemetery. Have you tried a site called Findagrave? I look forward to hearing from you again. Rosie