DNA Meets the Paper Trail: Pedigree Triangulation Strategies for Early 19th-Century Research

In the engaging webinar DNA Meets the Paper Trail: Pedigree Triangulation Strategies for Early 19th-Century Research, genealogist Diana Elder provides a comprehensive roadmap for integrating DNA evidence with traditional records to solve challenging family history puzzles. Particularly valuable for those researching ancestors in the early 1800s—a period notorious for limited documentation—this session illustrates how combining DNA analysis with sound research practices can break through brick walls. With a focus on the concept of pedigree triangulation, Elder shows how genetic networks, solid documentation, and strategic tools can help genealogists confidently identify common ancestors.

• Pedigree Triangulation Demystified: Elder introduces pedigree triangulation as a method to identify a common ancestor shared among DNA matches by analyzing their family trees, even in the absence of shared segment data. This approach is particularly useful for relationships beyond second cousins, where traditional triangulation may not be possible.
• Genetic Networks in Action: Attendees learn to build and interpret genetic clusters manually and using automated tools like Genetic Affairs, GEDmatch, and DNAGedcom. Elder highlights the importance of organizing DNA matches by maternal and paternal lines, utilizing features like shared matches and colored dot systems across various testing platforms.
• Power of Combining DNA and Documents: Through a compelling case study on Rachel Cox and her father Benjamin Cox, Elder demonstrates how DNA evidence, when paired with migration patterns, land records, tax rolls, and census data, can lead to conclusive proof of lineage. Her use of McGuire charts and shared centimorgan tools reinforces the importance of both visualizing and validating genetic relationships.

Finally, be sure to explore the rich collection of additional resources included in the webinar syllabus—including podcasts, blog articles, tools, and detailed guides. These materials are designed to support your journey in applying pedigree triangulation and solving even the most elusive family mysteries.