The First Comprehensive St. Clair / Sinclair DNA Report

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DNA SNP matches + connections in medieval Norman records prove one of our Saint-Clair lineages was directly connected with the powerful families behind the Knights Templar. Click Here >>

While in France with Scott Wolter of America Unearthed, he showed me a particular basilica with an incredible sculpture and an engrailed cross. I think you will find this as interesting as I did. Click Here >>

Welcome to the St. Clair Sinclair DNA Project
DNA-strandOver the coming months, you'll see new pages here with the latest updates. Click here for an overview welcoming message. Click links to left to see the full report on our family study.
Herdmanston St. Clairs, a Mystery No More 
Sinclair DNA CaithnessThe first of our family in recorded Scottish history came from Normandy and received land at Herdmanston from the de Morville family. Now, we know their living descendants. Click Here >>
Update on Our Z1+, Z346* Caithness Lineage 
Sinclair DNA CaithnessA well-known Sinclair has tested positive for the Z346* SNP and he's got a paper trail that might prove ancient connections. Read the joint report by Shawn Sinclair & Steve St. Clair Click Here >>
The Scotch Corners "Scottie Dogs"
Sinclair DNAMy good friend and co-admin of the DNA study, Mark Sinclair Staveley shares a family story and a significant momento of one of our Lineages from his Grandpa Mac Sinclair. Click Here >>
A Confluence of Surnames - SNP Connections
Sinclair DNAOur R-L193 SNP study and STR matches are connecting surnames from records in Medieval England. Click here to explore the extensive research. Click Here >>
Many Thanks to Our Research Partners
sinclair_dnaIt's impossible to imagine covering so much history without the help and inspiration of many friends along the way. That list is growing, as you'll see here. Thanks so much to all of you. Click Here >>

News Update

Learn more and join the Sinclair DNA study at Family Tree DNA - Click Here