The National Society Daughters of the American Revolution is a lineage-based membership service organization for women who are directly descended from a person involved in supporting the American Revolution. A non-profit group, the organization promotes education and patriotism. Its membership is limited to direct lineal descendants of soldiers or others of the American Revolution era who aided the revolution and its subsequent war. Applicants must be at least 18 years of age and have a birth certificate indicating that their gender is female. DAR has over 190,000 current members in the United States and other countries. The organization's motto is "God, Home, and Country".

Genealogy is the study of families, family history, and the tracing of their lineages. Genealogists use oral interviews, historical records, genetic analysis, and other records to obtain information about a family and to demonstrate kinship and pedigrees of its members. The results are often displayed in charts or written as narratives. The field of family history is broader than genealogy, and covers not just lineage but also family and community history and biography.