One way of telling for sure which men are biological cousins is to analyze the DNA of their Y chromosome, which comes down unaltered from father to son except for the occasional mutation. Several companies do this testing. At one company, FamilyTreeDNA.com, three men with three different spellings of this name have the same Y chromosome, which proves they are biological cousins. The three men are Donald Raxter Surrette (from the western North Carolina family), David Aaron Sarrett, and Rick Surratt. I do not know the ancestry of Mr. Sarrett and Mr. Surratt, but I thought the variations in the spelling were interesting.
Paul Sisco (a geneticist and cousin of Donald Raxter Surrette of Transylvania County, North Carolina)
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