On FTDNA 3 people have been tested that are descendants from William Crockett that married Nancy Asher Mast. They have good paper trails showing that they are descendants. They are of the Haplogrooup R-M269. R-M269 is the most common haplogroup in Western Europe. At least 80 percent of the people in Great Britain test R-M269. From the DNA markers it appears that there are at least 5 different Crockett families that are not related in modern time.
12 People that claim to be descendants of David "the elder" Crockett, Davy's grandfather, have either tested positive or projected from common markers as being of the haplogroup I-M 223 which is not very common. In fact only about 2% of the Western Europeans test positive for this haplogroup. Five of these 12 had the detailed Big Y test showing that they are all a subgroup I-Y32632. They are the only people ever tested for this subgroup by FTDNA which appears to unique to this Crockett family.
It is possible to determine the DNA of an ancestor if descendants from multiple sons are tested. People can be grouped with certainty by DNA alone, but it is up to genealogy to place
a group in a family.
A descendant of William Crockett (b. 1783) that married Nancy Asher Mast, Audrey Lee Crockett, is administrator of the Crockett Y-DNA Project. I am a c0-adiministator and one of the people with a detailed Big Y test that is a descendant of Davy's grandfather. He was my 5th great grandfather.
William Crockett (b.1782) married Rebecca Elliot in Jefferson County, Tennessee on 3 Feb 1803. He probably died in Lincoln County, Tennessee before 1840 because Rebecca shows up in Shelby County, Illinois in the 1840 census without William.
The William Crockett (b.1783)) married Nancy (Asher) Mast in Montgomery County, Ohio on 25 June 1811. They moved to Carroll County, Indiana. I had this person as a son of Davy's uncle William until the DNA tests which proved his father was not of Davy's family. I believe he may be the son of a daughter of William Crockett (b. 1748). I have numerous autosomal DNA matches with his Crockett descendants. His descendants have many autosomal matches with my Crockett relatives and also with the descendants of David Crockett (b.1779) that married Margaret Elder, who is also thought to be a son of William Crockett (b. 1748).
According to autosomal DNA John Daniel Crockett is not related to the Crocketts that include Davy Crockett.
