That is quite a list of names.
Stephen Girard,banker/merchant of Philadelphia,financed the US Treasury with his own wealth for the WAR OF 1812.His neice,Henrietta,married Henri Lallemond,a deserter from Napolean's army,and friend of Joseph Bonaparte.
The map ypu posted shows the LONG-BELL EXPEDITION of 1820,federaly funded and sactioned by Sec of War,John C Calhoun,as a scenitific exploration,but it was a coverup for its true purpose-a recon and intelligence of the Spanish Territory after the Adams-Onis Treaty.Led by Major Stephen H Long with Capt John R Bell as the journal writer of the mission,they traveled from the Red River to the Platte,to Manitou Springs and Pikes Peak,and Sante FE,all well within the Spanish Territory.There is NO mention of gold in Bell's journal.
What do these people and events have to do with the BEALE treasure?