Several years ago, a DNA study
was done which verified that William Preston "Wild Bill" Longley was
hanged and buried in Giddings Texas. This was done by testing DNA
from the supposed remains of Bill Longley and comparing them to a male
descendent of Campbell Longley (Wild Bill's father). The result
was a perfect match indicating that the bones in the grave really did
belong to William Preston Longley.
A family member initiated further investigation by setting up a DNA
study with FamilyTreeDNA. This study verified that the Texas
Branch of Longleys and the Maryland Branch of Longleys have a 12-point
match - meaning that the two branches are closely related. The
Massachusetts branch has a single genetic mutation - indicating a
common ancestor between the families.
If you'd like to join the LONGLEY DNA project, it costs about $100 per
test. Because it's a Y-chromosome test, its only valid for direct
male descendents.
Disclaimer from Ky; I haven't spent the money to join the project -
just thought I'd let y'all know it was available.