The St. Mary's City colonists are now in Historical Matches, just in time for America's 250th 🇺🇸
Hey r/23andme!
As promised when our 23andMe research team published the St. Mary's City study in May, we have officially added 29 of the founding colonists of Maryland's first capital to the Historical Matches feature.
This year marks the 250th anniversary of the United States, and while Independence Day celebrates 1776, the story of English settlement in America began long before the Declaration of Independence. In 1634, the first colonists of Maryland stepped ashore at St. Mary's City, carrying with them hopes of religious freedom and a new life.
Here's a quick recap of what the study found:
- More than 1.3 million 23andMe research participants share DNA with one or more of the 29 individuals we performed IBD analysis of in the study. The strongest genetic connections were to participants with ancestry from western England and Wales.
- Participants from Kentucky showed notably elevated genetic sharing with the St. Mary's individuals. This reflects the documented post-Revolutionary War migration of Maryland Catholics to that state, highlighting the power of our IBD-based approach to detect historical migrations throughout the United States.
- Among the 29 individuals now in the Historical Matches feature is a man who we tentatively identified as Leonard Greene, the son of Thomas Greene, Maryland's second governor. This was the first time ancient DNA was used to propose the identity of an unknown historical individual without any prior hypothesis about who they might be.
- We also confirmed the identities of Philip Calvert (Maryland's fifth governor), his first wife Anne Wolseley Calvert, and Philip Calvert's infant son likely from his second marriage, all buried in lead coffins beneath the Brick Chapel floor.
- Researchers identified five additional family groups among the burials, including one spanning three generations — a grandmother and grandfather, their son, their son's wife, and the couple's daughter.
Full story on our blog: [Link]
👉 If you're a 23andMe+ Premium member, head to Historical Matches to check your results. And if you get a match, or if you just have thoughts on the study, we'd love to hear from you in the comments!