I don't think the info I found will help clarify but here it is:
Married: 18 June 1875, Pawnee, NE
Source: Nebraska Marriages 1855-1995, familysearch.org
Married: 9 July 1876, Elk Creek, Pawnee, NE
Source: same as above
Nebraska doesn't publish a death index, therefore, it's difficult to find deceased persons. You must look at the cemetery indexes or the obituaries.
I looked at the two cemeteries that I found online but he isn't listed in them. I'd contact the Pawnee County Historical Society, www.pawneecountyhistory.com/
and ask if they have cemetery indexes or obituaries.