There is an Emil Peterson buried in the Stromsburg Cemetery, DOB on stone is May 18, 1844; DOD on stone is Feb. 8, 1887. There is also an Emil S. Peterson buried in this cemetery. Memorials are posted on findagrave.com. There is a Carrie B. Peterson in this cemetery, 1853-1929.
Hope that helps. Let me know how else I can help. I live in this county.