My Trails into the Past

It's Saturday Night - time for more Genealogy Fun!     Your mission, should you decide to accept it (cue the Mission Impossible music here) is to: 1)  Do you know what a "Henry Number" is?  It is a descendant numbering system from a specific person.  The Wikipedia article for Genealogical Numbering Systems describes it as: "The Henry System is a descending system created by Reginald Buchanan Henry for a genealogy of the families of the presidents of the United States that he wrote in 1935.[3] It can be organized either by generation or not. The system begins with 1. The oldest child becomes 11, the next child is 12, and so on. The oldest child of 11 is 111, the next 112, and so on. The system allows one to derive an ancestor's relationship based on their number. For example, 621 is the first child of 62, who is the second child of 6, who is the sixth child of his parents.  In the Henry System, when there are more than nine children, X is...