Probably the oldest son of Bengt Nelson and Nilla Olson. Family story has it that he was a sailor all his life. The name shows up in the Nelson - Osborne Reunion notebook and in Nella's letters from Sweden.(nilsson.FTW, Sondra Johnson Aldegarie)
Nels Bjorklund was listed as a surviving brother in Pella Nelson Franzen's obituary.
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Ancestry.Com World Family Tree, Algot Holm Genealogy submitted by Karin Holm Bjorkholm (Sweden):
Most of the children of this family came to the United States and used "Nelson" as their last name which I feel was the Americanized version of Nilsson. Nils is listed as "Nils Bengtsson Bjorklund". (How did he come to use the last name of Bjorklund?) I have included their birth surname in parenthesis, followed by the Americanized "Nelson" so their roots can be found in both countries