The St. Clair engrailed cross, the Auchinleck Manuscript and our full history take on far greater meaning thanks to DNA testing

The First Comprehensive St. Clair / Sinclair DNA Report

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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.
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 here >>
Sinclair DNA YouTube Video Collection.
sinclair dna videosA good collection of Sinclair DNA YouTube videos has been built over the years, and we're not done yet. Now we'll keep them all in one place.  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 >>
The Saint-Clair Name in France
Saint-Clair-FranceAs it turns out, there were likely many places named Saint-Clair in medieval France. A newly discovered resource makes it clear ours really is a place-name.
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