Hello and welcome to the William Davis DNA Project.

We are a group of descendants of one man, our immigrant ancestor, William Davis, who was born in 1663 in Wales and came to PA in 1684. We all carry identical or very close patterns of Y-DNA. We know this because we each have had a 67-marker DNA test done and our tests match each other. We’re all I-L160  haplotype and we’re all cousins! (I-L160 is the same as I-P37 when only 12 markers are tested and is the same as I2a1b, old vernacular).

Our mission is to use DNA testing to “prove” (a relative term in genetic genealogy) as many major lines as possible of the William Davis family tree, using our paper family tree as a guide and using DNA patterns from tests of living descendants as proof. Because William Davis and several of his sons were ministers in the Seventh Day Baptist Church, much of his family tree has been researched in detail and has been published in both books and online, resulting in a strong paper history for comparison.

As descendants of the same ancestor, we collaborate in our research to clarify our genealogical histories. We share our findings with each other and inspire each other to do better research than we might have done on our own. We discover truths with DNA that we could never find any other way.

Is your last name Davis? Did your Davis ancestors come from Wales, PA, RI, NJ, WV, NY, WI, OR or CA? These are just some of the states that William Davis and his known descendants migrated through as they made their way across the US. If you believe that you are descended from William Davis, born 1663 in Wales, we would love to have you join our group.

To join the William Davis DNA Project, you must be a male with the last name Davis and be willing to take a cheek swab DNA test, preferably to 67 markers from Family Tree DNA testing company. Or, if you are a female, you need to get the cooperation of a living brother or father (or male first cousin) with the last name Davis who would take the test. Other surnames are fine if you have reason to believe that your paternal line name should be Davis.

If you match our Davis lines, we will work out a chart showing how you are related to others on the tree, as best we can determine, and will help you with your research if possible.  But most importantly, what we have to offer is an interesting and spirited group of Davis people who are ALL YOUR COUSINS!

This project is exciting and rewarding. I hope you will contact us with your Davis history so we can see where we relate. And if you aren’t sure of your Davis ancestry, contact us anyhow and perhaps we can discover the connection.

Looking forward to hearing from you,

Jan Davis Markle, M.A.
Founder, William Davis DNA Project

jrmarkle at gmail dot com

The William Davis DNA Project is a non-profit, volunteer-run group created to connect living descendants of William Davis by DNA testing and to research their Davis ancestors We have no affiliation, financial or other, with any DNA testing company.