Y-DNA Project


The Clan Crawford Association has collaborated with Family Tree DNA (FTDNA) to produce the Crawford Surname Project. FTDNA has the largest Y-DNA database in the world and has the greatest ability to compare your DNA with others who have taken the test to determine relationships.

We now have a "Y-DNA Analysis (Members Only)" section in the Y-DNA tab that will allow members to view and download special reports concerning STR and SNP results related to specific lineages or haplogroups. These reports will not be available to non-members. participation in the Crawford Surname Project does not provide automatic membership in the CCA. Join the CCA by clicking on the "Home" page and then "Join the Clan". You will then be able to click on the "Members Only" tab to access the PDF files. Non-members viewing this page will not be able to see the analysis tab.

The Crawford surname project has over 400 participants at this time, but many more are needed to obtain an adequate sample of Crawfords to draw major conclusions. We are encouraging all Crawford men to have their DNA tested and attached to the Family Tree Y-DNA database and the Crawford surname project. We are especially interested in testing more Crawford males from Scotland where we hope to obtain linkages to their ancestral home for other Crawfords in North America, Australia, and elsewhere.

We have made significant progress in the last year in delineating and identifying specific ancient Crawford lineages using SNP information derived from the Big Y test and other advanced SNP tests provided by Family Tree and YSEQ and with the help of the Big Tree at Ytree.net. We are seeing more and more lineages within their own defining haplogroup and are also separating multiple sub-lineages within a lineage. As the SNP research fulfills its possibilities, we have been able to track DNA branching into modern times and we are starting to connect Y-DNA with our known paper trails. It is too early to be certain but what this could mean is that the Y-DNA participants, especially those who have taken advanced tests such as Big Y will reconnect the lost paper trails and allow them and us to understand how we are related."

Within the Crawford Surname Project the haplogroups B, E, F, I, J, and R are represented. The project continues to expand in scope and in its power to detect recent common ancestors. The number of identified lineages has grown over the years and the complexity of the I1 and R1b haplogroups have been the principle cause of additional lineages. Some individuals may find that they have changed lineages while others may find that they are no longer in a lineage but have been put back into the ungrouped category. This will probably be a short stay as more individuals join the Crawford surname Project and future analysis connects new relationships.

When you click on the following link you will see a spreadsheet with haplogroups and under the haplogroups numbered lineages. When you move your mouse over the lineage name you will see a list of kit numbers. If you haven't visited the site before you should look for your kit number or the kit number of your relative to determine under which lineage they have been placed. You then can click on that lineage and you will be taken to a lineage page that contains the STR and SNP information for the those in that lineage.


The Y-DNA FACT SHEET PDF will provide you with additional guidance and information in interpreting your results.
The Y-DNA Administrators PDF will allow you to become better acquainted with the Administrators who update and manage the site.
The Y-DNA Utility will explain the protocol and procedure for determining lineages and TMRCA using STRs.
The Y-DNA STR Lineage Placement Protocol describes the decision making process for identifying and naming lineages.