Flanigan Genealogy Show all FLANIGAN (5 individuals) ALL First name starts with: C D J M James H FLANIGAN ♂1844 – James Jr. FLANIGAN ♂1830 – 1905 Gavigan Genealogy Genealogy (from Greek: γενεαλογία genealogia from γενεά genea, “generation” and λόγος logos, “knowledge”), also known as family history, is the study of families and the tracing of their lineages and history.