Welcome to the Sebastian DNA Project! Sebastians of all spelling variations are encouraged to join this surname project. In order to participate in this one-name study, you must provide the Sebastian DNA Project with four items of critical information: (1) The name of the person being tested. (2) A family pedigree chart (or GEDCOM) showing your patrilineal lineage, if known. (3) The name, date and place of birth of your oldest known direct paternal ancestor, along with any other pertinent information. (4) Permission to publish your Y-DNA results along with the name, date and place of birth of your oldest known patrilineal ancestor (at minimum). Only males have Y-chromosomes and only they are eligible to directly participate in this surname project. Females can, however, participate indirectly by encouraging their male SEBASTIAN relatives, such as their father, brothers, uncles, and paternal cousins, to test and thereby trace their surname line. If you have not yet purchased a DNA test kit or would like instructions on how to collect your DNA sample, please visit: https://www.familytreedna.com/dna-test-kit.aspx If you would like additional information on the whole DNA process and how to interpret your results, please visit: https://www.familytreedna.com/understanding-dna.aspx This project was founded in 2010 at FamilyTreeDNA.