Marriage

====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 [[parent]]al responsibility for any children arising from the marriage.<ref name="murdock-1949-definition">Murdock, 1949, p. 24. "''group marriage'' or a marital union embracing at once several men and several women."</ref> 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 community|intentional communities]] and alternative subcultures such as the [[Oneida Community|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.<ref>{{Cite journal|url = https://www.britannica.com/EBchecked/topic/247131/group-marriage|title=Group Marriage|journal=Encyclopædia Britannica|date=9 October 2023 }}</ref>