Determining who holds the largest documented lineage often points to historical figures with millions of living descendants spread across continents due to historical expansions and high reproductive success. Genealogical studies and DNA analyses frequently highlight figures like Genghis Khan, whose vast empire and historical lineage mean millions of modern men across Asia share his direct Y-chromosomal genetic markers. Similarly, imperial lineages such as the descendants of Confucius maintain meticulously recorded ancestral registries spanning thousands of years, encompassing millions of registered living members globally.