The Treinfhir family, while most prevalent in Monaghan, have deep roots throughout Ireland.
To explore the branches of the Treinfhir Family, choose a branch in the tree below and click on it to go to that branch’s page. From there you can explore the towns and townlands where Treinfhirs have lived, classified by their DNA family. For example, click on the “AEDH” branch to explore where genetically tested members of the Aedh branch have lived and some of their family nicknames.
The Genetic Branches of the Treinfhirs
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