Trying to match this unidentified man with missing persons is not an easy task, due to the passing of time.
The unconventional manner in which he was buried ( i.e. sitting position in a shallow back yard grave) would indicate that he was probably murdered and/or that his death might have brought unwanted attention to illegal activities being conducted near the property.
His skeletal remains were found in 1984, but they had been in the ground for decades before they were discovered. He was estimated to be somewhere in his late 60's when he died. An approximate estimate of death date might be some time between 1920 and 1930.
With only such estimates to go on, it makes it difficult to research possible identifications. Newspapers in those years tended to report local stories and items of interest about residents of the area. However, Goodhue County had a continuous flow of migrant workers passing through to work in the clay pits and on farms during harvest seasons. The newspapers did not tend to print many articles mentioning migrants by name.
Plat maps show the property boundary lines, along with the names of property owners for various years.
Census records were made every 10 years in years ending in a "0", such as 1910, 1920, 1930, etc. These records are like snapshots of who was living - and where at the time - this includes family members and all hired persons residing at a listed address/farm.
Comparing entries between two census years for farms in the vicinity of the rural farm where this man was buried gives an indication of persons who may have died or moved away.
Death indices, obituaries, cemetery records, news reports, and other records can be consulted in such a search for potential matches to this unidentified man. He would likely NOT be listed in any of these dearh records but they can be used to eliminate persons as potential matches.
If DNA testing is done on these bones, perhaps more information will be available, such as nationality, age, year of death, etc. Census records list nationalities and previous countries of residence.