Greetings

Unfortunately there are a number of different individuals with the same name that was living during the American Civil War period. Various persons named John Wortham residing in the states of Texas, Alabama, and Tennessee at least. The name on the currency note could have been any of these persons.

The T-41 / 1862 $100 note was an interest bearing note. Most of those now surviving also have Interest Paid ink stamps on the back. If you had the note you could go by the local treasurers office and collect the interest due on the note. They would stamp on the back Interest Paid which would also have the month-year, and location. Give it back to you, and you can do the same thing the following year and so forth. If your note has such a stamp, the location the interest paid occured could help you narrow down the search. Ive seen a couple of these with names or initials written on the back. They might also have the issue date hand written on the back, when it was actually given out if the date was different from when the note was actually dated on the front, since its an interest bearing note.

Also keep in mind that such notations might not have been in his own hand, but could have been written by the treasury clerk or anyone else.

Good Luck
Frederick