Overlaying these relationships was a phratry system, a division into clans.
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Four main Tsimshian clans form the basic phratry.
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An Athenian belonged not only to a phyle or tribe and one of its subdivisions, the phratry or brotherhood, but also to an extended family, clan or genos.
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Family: people descended from a common ancestor; "his family has lived in Massachusetts since the Mayflower"
In ancient Greece, a phratry (phratria, Greek: u03C6(u03C1)u03B1u03C4u03C1u03AFu03B1, "brotherhood", "kinfolk", derived from u03C6u03C1u03B1u03C4u03AEu03C1 meaning "brother") was a social division of the Greek tribe (phyle). The nature of these phratries is, in the words of one historian, "the darkest problem among the social institutions...
A kinship-based corporate group composed of two or more clans that recognize common ancestry.
A group that typically consists of several clans that extend the rights and obligations of kinship to one another but retain distinct identities.
Subdivision of a tribe or phyl, usually kin. Phratries in Classical period were well defined social groups concerned with descent and citizenship. Every citizen family in Athens belonged to a phratry.