Using DNA to assist in the genealogical pursuits of COSTIN / COSTON / COSTEN family members and their descendants. Defining groups and subgroups of the family based on continuously changing understanding of the Y-DNA; Autosomal DNA and mtDNA (Mitochondrial) DNA world. We believe that any testing is good testing but encourage our participants to test their oldest family members first, test Y-DNA in males at the highest level that fits the budget. Y-700 testing has become the emerging standard. Autosomal testing is available for individuals who are somewhat closely related to COSTIN / COSTEN family but no longer carry that surname and mtDNA testing (mitochondrial testing) is helpful to all ... but particularly to learning more about your line of descent on your mother's side of your ancestry. Have fun ... and ask questions please.