The Carr Surname Project is open to everyone searching their Carr/Kerr paternal line family history. All phonetic variations of Carr are included in the project. The include Carre, Corr, Kerr, Ker, Karr, Kear and others. The goal of this project is to identify Carr family genetic lineage links around the world to aid family history research. Primary focus is on YDNA matching among families with Carr surname paternal line descent (father to son in each generation). Studies show us that the geographical origins of people using the Carr surname today include Scotland, Ireland, France, and the northern European Germanic regions. We also find that the spelling of the Carr surname across generations within the same family often includes many phonetically equivalent variations. YDNA identifies paternal lines that may share a genealogically significant recent paternal line ancestor. Using this information and traditional genealogy methods has helped many family historians learn about their family heritage and extend their family history back generations as well as connect to close cousins. Project preference is that all participants test at the 111 marker level for resolution identifying common ancestry within 4 to 5 generations. A 37 marker YSTR test provides paternal line matching at a 5 generation or higher level for most people. The Big Y test provides the most complete haplotype definition for those wanting that level of specificity.