Endogamy is the practice of marrying within the limits of a certain community, culture, clan, or tribe. In endogamous populations, everyone descends from the same gene pool. Jewish genealogy is difficult, and DNA testing among Jewish descendants can be difficult to interpret properly. This volume chronicles one man's quest for his ancestors using DNA testing. Learn how he selected family members to test and how the results enabled him to determine the probable families of his ancestors. These same principles can be applied to any endogamous population other than Ashkenazi Jews, including Acadians, Polynesians, and Low German Mennonites. People from Arab countries, small European villages, Newfoundland, and many island nations will also benefit from the methods shown here.