As Christine said in her reply to you the kendallkin.org website is an awesome place for information. I was able to find so much related to my family on that page. I attempted to look there this morning but the server is down however I found a Nels Boyd in the Helmar Cemetery that appears to match yours.
Here is the link: http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=bo...
This link: http://search.ancestry.com/search/db.aspx?dbid=18493
goes to the searchable form to the history of Kendall County that also has loads of information on it's founding citizens including the fact that my GGG Grandfather Ørjan Johanessen Markhuus was one of the founders of the first Lutheran Church in the Lisbon Township area.
Hope this helps!