Casefile Clues readers will remember Benjamin Butler from an earlier issue when he was shown to be the likely father of Ellen Butler who married William Ira Sargent in Davis County, Iowa in 1870. Benjamin could not be found in 1860 and some basic searches of 1850 were performed.
This entry from Port Huron, St. Clair, Michigan may be the Benjamin Butler in 1870 in Davis County, Iowa. The age matches, the 1850 location is consistent, but other details do not match exactly and the problem is that even if the 1850 Benjamin is the 1870 Benjamin, the children in the 1850 Benjamin's household have all "aged out" and he has new ones by 1870. Probably has a new wife as well.
A future issue will discuss my work on comparing these two men and how it was done. Right now, I'm not certain whether I'll conclude that they are the same or not. But we'll write up the research and the process.