bloodline
noun
The family connection that ties a person to the generations that came before them.
Mostly heard in three contexts: royalty, racehorses, and pedigree dogs. For ordinary families, "ancestry" or "lineage" fits better.
Related words
dynastyA line of rulers who all come from the same family.lineageThe line of ancestors a person or family descends from, or the descendants that follow from a common ancestor.clanA large family group whose members trace their line back to the same ancestor, even when the exact links are unknown.descendantA person who comes from a particular ancestor, no matter how many generations later.tribeA social and ethnic group that is bigger than a clan or band, though smaller than a nation, and may itself contain several clans.forefatherA relative from generations long past; an ancestor.