I did find out more about Nun.
He did spend time in Chicago, but may have become ill and come home to be cared for by his family. But he definitely did spend time as a clerk/stenographer in Chicago.
Nun was at home with his grieving family just after his brother's and his mother's deaths in 1885. His da was newly bereft, as were his three younger siblings.
He got his naturalization in 1894 in Illinois. Another tidbit is the person who was his witness on his naturalization papers also spent time in Chicago, although it's not where he was from, either.
He was in Chicago according to land transfer documents in 1903. At that point, he was single. So he spent about 9 or 10 years outside of Nebraska ... possibly. He could have married and had children, but there is no record of that.
He's not (currently) findable (by me) 15 years later, in the 1900 census, and was probably in Chicago, or moving around then.
I did get him on Findagrave. I just decided that I did not need the cemetery people to contact me, which they have not after four or five years, and so ... : https://www.findagrave.com/memorial/259209688/nun-h-davis
