NOTE:  Although this chart is based upon a careful interpretation of DNA test results as well as traditional genealogy research, it should still be considered highly speculative and not cited as a primary source of fact. 

In addition, except as noted, the named blocks should not be considered as consecutive generations.  In fact, multiple generations existed between most of the named blocks shown below.
Adam
Probably Scotland
Possibly Pre-1400
The names in yellow blocks are hypothetical persons created to indicate common ancestors of genetic groupings.
     
                     
     
                 
Angus   Bourne
     
1600          
     
Migration to Ireland & USA   Migration to Ireland 1600s
                           
       
Father of L-20 Francis and L-98 James
Probably Ireland
  Charlton
1640s
Dungannon, Ireland
Richard
1650s
25-Marker Haplotype Validated
                       
         
1700                  
         
Francis L-20
ca 1710-1773
PA/VA/NC, USA
- - - - - - - - - - - - - - -
James L-98
ca 1716-1777
PA, USA

Haplotypes Validated & Matched
  Multiple descendants of Charlton migrate
to USA  
(L-39 in 1786, Others Dates Unknown)
Smithy
1700s
Same Haplotype as Thomas
Thomas
1700s
Same Haplotype as Smithy
               
         
    Edward
Ulster, Ire.
1750s
Migration to USA
(Dates Unknown - Probably 1700s)
Migration to USA & Canada
(Dates Unknown - Prob. 1700s & 1800s)
           
        William
PA/KY
Late 1700s
 
           
1800                      
           
    Some descendants of Charlton in USA
(L-330) return to Dungannon, Ire. in 1800s
James L-286
County Sligo, UK
ca 1775 - 1845
Samuel L-32
ca 1793 - ca 1800s
VA, USA
 
           
1900 - TODAY                    
           
Descendants of Francis & James in USA today include
Lineages 13, 241, 227, & 98
  Descendants of Charlton in USA today include:
Lineages 2, 3, 6, 39, 330, & 438*
Charlton Haplotype Validated
Peter L-286
g-g-gson of James
Kent, UK
Armond L-32
Texas, USA
Descendants of Thomas include Lineages 4, 64B, 112, 213, 238, 244, 245, 364, and 489.  (L-213 is believed to be a sub-lineage of L-180 which has not been DNA tested)
 
The following lineages are thought to be descendants of Adam.  However, not enough is known to speculate about their routes of descendancy.
  L-7 L-48 L-142 L-328 L-405 L-162  
  L-10 L-69 L-252 L-377 L-438* L-254  
  L-24 L-82 L-291 L-384 L-452   The above two are thought to be closely related.  
      L-44 L-130a L-301 L-395 L-494        
* Two samples from L-438 produced different test results.  While both appear to be descendants of Adam, only one appears to be part of the Charlton Group.  The line of descendancy of the other is unknown.