I have your Joshua S. Ditto in my database. I have only two wives, Rhoda Garrison and Frances Burford (could this be your Fanny.Joshua was the son of Michael Ditto (born 1796 and died Jun 1850) and Margaret Simpson (died 1841)
Michael Ditto was the son of James (John) Ditto, who Ditto's Landing, in Huntsville, AL, is named.
You may want to visit one of my web sites, www.mindspring.com/~chuckgross/ and then go to the Ditto section to learn more about James (John) Ditto.
I descend from Thomas Hood Ditto, the son of William Dittoand grandson of James (John) Ditto (I think).