section_path: Types/Polygamy/Plural marriage
section_name: Plural marriage
paragraph_text: Plural marriage
  
  Group marriage (also known as multi-lateral marriage) is a form of polyamory in which more than two persons form a family unit, with all the members of the group marriage being considered to be married to all the other members of the group marriage, and all members of the marriage share parental responsibility for any children arising from the marriage. No country legally condones group marriages, neither under the law nor as a common law marriage, but historically it has been practiced by some cultures of Polynesia, Asia, Papua New Guinea and the Americas – as well as in some intentional communities and alternative subcultures such as the Oneida Perfectionists in up-state New York. Of the 250 societies reported by the American anthropologist George Murdock in 1949, only the Kaingang of Brazil had any group marriages at all.