Valdemar Johnson Family       1905 Minnesota State Census
  The Valdemar Johnson family listing begins about half-way down the page. But the two names prior to the Johnson listing is a husband and wife, Jonas and Guðrún Gislason. He is 69, she is 66, which would make Guðrún's birth year 1839, the same year Valdemar's mother,  Guðrún Halldórsdóttir was born.