St Clair Sinclair DNA Study- Background



Clair, Clare, Saint Clair, Sinceler, Sinclair, Sinkeler, Sinkler, St Clair


This is a global DNA study of the Sinclair / St. Clair family. We accept anyone with any variant spelling of the name. There have been over 70 variants since 1026 AD. The Sinclair DNA study was started in 2004 and has grown to over 230 tested members. Our focus now is driven by the advances in SNP studies. These are getting closer and closer to the time period of documents. If we can find similar matches between surnames in documents, plus matches in our SNP studies, then we've got good evidence of a real connection.

This is the official, recognized DNA study of the Sinclair family worldwide. We began when Steve St. Clair couldn't find a document that might help connect him back before the 1820s. He contacted Stan St. Clair and they both completed the test. After the 25-marker test results came in, it was clear they connected, and Steve was able to make a connection back to the 1698 immigrant, Alexander Sinkler of Glasgow, Scotland. Stan and Steve realized this could help the rest of our worldwide family, and our DNA study of the Sinclair / St. Clair / Sinceler family was born.

Since then, we've maintained a very high standard of research, results reporting, and ongoing education about how DNA works.

If you're a member of our family who wants to find out more about your ancient or recent ancestry, you're in the right place. You can find contact information, and a lot more at our St Clair Sinclair DNA website

General Fund

Project Stats

Statistic Type Count
Big Y 14
Combined GEDCOMs Uploaded 36
DISTINCT mtDNA Haplogroups 52
DISTINCT Y-DNA Confirmed Haplogroups 23
DISTINCT Y-DNA Predicted Haplogroups 7
Family Finder 58
Genographic 2.0 Transfers 11
Maternal Ancestor Information 133
mtDNA 79
mtDNA Full Sequence 36
mtDNA Plus 62
mtDNA Subgroups 0
Paternal Ancestor Information 166
Predicted Y-DNA Haplogroups 94
Total Members 287
Unpredicted Y-DNA Haplogroups 0
Unreturned Kits 6
Y-DNA Deep Clade (After 2008) 47
Y-DNA Deep Clade (Prior to 2008) 25
Y-DNA Subgroups 1
Y-DNA111 49
Y-DNA12 247
Y-DNA25 233
Y-DNA37 210
Y-DNA67 146