In this lecture, attendees will explore a comprehensive case study demonstrating how the strategic integration of genetic data and traditional documentary evidence can resolve complex identity mysteries. While autosomal DNA is a potent tool, its precision decreases with each generation, requiring researchers to move beyond vague inquiries toward focused, actionable research questions. Participants will learn a methodical framework for filtering matches and employing advanced techniques—such as triangulation, intersectional analysis, and the evaluation of shared DNA segments—to identify unknown relatives. By combining biological data with pedigrees and locales, this session illustrates how to satisfy the Genealogical Proof Standard (GPS) and successfully navigate common genetic hurdles like pedigree collapse and varying inheritance patterns.