Hey Terri.Not really sure what you are asking.Connection to whom?Anyway it seems that you are starting at the top.John Ogletree, along with his brother Thomas are considered by most to be the patriarchs of most of the Ogletrees in the US.Their lineages are pretty well documented.
If you are interested in their offspring I suggest you contact Mr. K.C. Ptomey who has written a book that is the best out there on these lines.It is now available on floppy which is really good because you can run off family group sheets as you please.(you must have Family Tree Maker to read).You can contact Mr. Ptomey at kcptomey firstname.lastname@example.org
I will add this.You said John Ogletree who married Ann Duncan.This has been fairly well debunked.We have "proof" of a wife named Frances and we have "proof" of a wife named Mary.We can also present documentation as to where the Ann Duncan thing came from.Do not believe there was ever a wife named Ann Duncan.
Hope this helps.Be a bit more specific as to what you are looking for and I will be more than happy to help.