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St George Y-DNA

St George, St Jore, Laporte, Sergerie paternal lines worldwide
  • 8 members

About us

The broadest and most ambitious goal of this project is to establish the Y-chromosome DNA markers for all qualifying project surnames. This should stand as a lasting resource for researchers to compare their DNA and to identify their surname origins.


Now calling all members of the World Association of Laportes and St-Georges!

We currently have three descendants of Jacques Laporte dit St-Georges participating in this project. We've always hoped for more participation from this large group of Québec descendants. If you believe you descend from these families, please consider taking the Y-DNA test and joining this surname project. By participating you could help some future researcher who desperately needs a Y-DNA comparison to clarify their own research.

A lingering question for the genealogists at the World Association of Laportes and St-Georges might be whether there is any genetic relationship between Jacques Laporte dit St-Georges (1st lineage) and Pierre Laportes dit St-Georges (5th lineage). Y-DNA comparisons of descendants would resolve this question.

The Y-DNA testing could also help clarify which branch of Laportes you descend from if you are unsure. There were other branches than that of Jacques and Pierre Laporte dit St-Georges.

This Y-chromosome test could be especially useful if you've ever had problems linking your St George family back to the Laportes and St-Georges families. It's possible that you descend from the other Québec St-George family - that of St-Jore dit Sergerie.


de St Jore Families of Normandy and Brittany

Several de St Jore families originate in and around the commune of Saint-Jores on the Cotentin Peninsula in the department of Manche in France. It is assumed that some of these families should be related though no connection has been made between them. Y-DNA markers for at least one of these families have been established by members of this project. Louis de St-Jore dit Sergerie and wife Jeanne Lebuffe immigrated to Quebec about 1746 where their St Jore dit Sergerie descendants multiplied. Some changed the name to St George, others to St Jacques or St Jarre, and some kept the name Sergerie.

We hope that descendants of St Jore families who remained in France will join this project to help clarify relationships between some of the St Jores families who lived in the department of Manche in the 17th and 18th centuries.

In Brittany the Jorre de St Jorre family appears about the same time as the de St Jore families in Normandy. Y-DNA comparisons between one member of this Brittany de St Jorre family with the markers for the Normandy de St Jores do not match. This shows that unrelated males adopted this surname in different places. Further Y-DNA samples from new participants should help to refine these conclusions.


St George Families of Kilkenny, Ireland

At least two St George men are known to have been born at Kilkenny, Ireland. Michael St George born about 1817 eventually emigrated to the United States and settled in Minnesota about 1860. John St George born 1821, the son of an Edward St George, emigrated to Australia. No relationship between these two St George men from Kilkenny has been established, but Y-DNA comparisons with one current group member who descends from John St George could help.

If your St George ancestor was Irish, you could be related to this Kilkenny St George family.



Do you have St George or variant name research riddles you'd like to make a goal of this project?

Perhaps your own research is outside some of these stated goals. We will be happy to hear from you and welcome your participation.