noun (n)

• group of people related by blood or marriage(noun.group)

  Synonym:
  kin, kin group, kindred, kinship group, tribe
  

  source: wordnet30
• A tribe or collection of families, united under a chieftain, regarded as having the same common ancestor, and bearing the same surname; as, the clan of Macdonald.(noun)

  source: webster1913