It is not often one gets direct, in-your-face evidence of a name variation. Usually one has to use other clues to confirm that references to individuals with slightly different names are, in fact, the same person.
That’s not the case with this envelope in the pension file of Charles Hartsell who saw Civil War service in Company E of the 102nd Illinois Infantry.
The name Chas Harkill is crossed out and Charles Hartsell is written above it.
The correction must have been made after the envelope was originally filled out as the ink with the correct name appears to be a slightly different color than the ink which was used to write the incorrect name and the handwriting of the correct and the incorrect names varies as well (the initial “C” and the initial “H” are both different).
Is the name really a variant or did the clerk get “off” copying the information from some alphabetized list of names? We’ll never know, but it is easy to see how the last names could get mixed up o confused.
Sometimes a record full of seemingly innocuous information (Hartsell’s file is full of medical minutia) can contain small clues that are larger than they originally appear. A name spelled incorrectly or an address that was only valid for a short time are clues that can be hidden in files that appear to be chock full of banalities.