Registration opens for 2026 webinar series on December 29.

Registration opens for 2026 webinar series on December 29.

Breaking Irish Brick Walls: A Y-DNA and Clustering Case Study

Maurice Gleeson
Advanced
Free

This presentation first explores clustering and how I used it to break through a brick wall at 1800. This added 24 additional ancestors and five additional generations to my family tree. Thereafter, I switched to Y DNA which allowed me to confirm the veracity of the ancestor line back to the mid-1600s and I am continuing to attempt to connect the line to Wales in the 1500s and prior to that to an established pedigree that goes back to the time of Noah.

Wed, December 2 2026: 16:30 UTC

About the speaker

About the speaker

Maurice Gleeson is a medical doctor by first profession (psychiatry, pharmaceutical medicine) and now works as a professional genetic genealogist. He authors several blogs (e.g. DNA and Family Tree Research) and has been a regular contributor to g
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