Wesson made a few different types
Requires professional appraisal.
Gun books would be a place to start
It looks like pictures I have seen of a "Frank Wesson 1860 rifle" (at http://buffaloclassic.tripod.com/). The numbers "3236" are stamped inside the shaft of the stock where the barrel fits; the barrel is about 23.5 inches long and the stock is about 22 inches.
Impossible to answer. Requires hands on appraisal
The pat. dates you gave are a std. stamp used by Wesson on all of his guns, the 59 date covers the barrel stop and the 62 date coves the barrel stop both for his riffles. Now to get to the value,I eould have to know if it pistol or rifle or shotgun The best place to look would be Flayders antique book. I am AA Frank Wesson collector and have most all mod. that was made. If I can be of help to you fell free to e-mail at frank@cot .net Frank Pellett 2946 N Rd 112 Tulelake,Calif. 96134
ConAgra owns Wesson
Eileen Wesson's birth name is Eileen Winifred Wesson.
Mel Wesson's birth name is Melvyn Thomas Wesson.
See Flayderman's "Guide to Antique American Firearms". Value can go up to multiple thousands depending on specifics.
Alphonzo Wesson's birth name is Alphonzo J. Wesson III.
A shotgun made for Smith and Wesson, sold under the Smith and Wesson name.