A DNA descendant study of the surname Du Mas/DeMoss and variant spellings in North America with focus on the descendants of French Huguenot immigrant Louis duMas and wife Catherine Callot who founded Frenchman's Repose, Maryland and later migrated to early Colonial Virginia. The project has the intention of defining if the many variant spellings of the name in various areas of the US are associated with the duMas family that fled France and took up asylum in the Netherlands after the St. Bartholomew Massacre. Variations from Canada, Mexico, Netherlands, England, Australia, France are also of interest.