Sororate marriage

A marriage custom in which a widower marries his deceased wife’s sister, often preserving ties between the families.

Levirate marriage: A marriage custom in which a widow marries her deceased husband's brother or another male relative. It is the closest parallel, assigning a deceased spouse’s sibling a marital role.
Kinship: A system of social relationships based on descent, marriage, adoption, or other recognized ties. Sororate marriage operates within rules that define which relatives can marry and what obligations follow.
Polygyny: A marriage system in which one man has multiple wives at the same time. A sororate marriage follows a wife's death; polygyny describes concurrent marriages.
Inheritance: The transfer of property, rights, or obligations after a person's death. A remarriage may influence how a deceased wife's property and family responsibilities are handled.
Nuer people: A Nilotic people of South Sudan whose social organization includes cattle-centered kinship and marriage practices. Nuer kinship shows how marriage customs can maintain relations between families beyond a couple’s lifetime.
Affinal kinship: Relationships created through marriage between a person and their spouse's relatives. The custom turns an existing affinal relationship with a wife's sister into a new marriage.
Monogamy: A marriage system permitting one spouse at a time. It contrasts with arrangements that may allow a widower to marry his late wife's sister while retaining other wives.
Patrilineality: A descent system in which membership and inheritance pass through the male line. Patrilineal obligations can shape the role assigned to a widower and his late wife's relatives.
Iroquois kinship: A kinship terminology system in which a person's mother's sister is classified as a mother. Its classificatory kin terms clarify why a deceased wife's sister may be treated as a familiar kinship partner.
Marriage alliance: A relationship between families or groups established and maintained through marriage. A second marriage can preserve an alliance formed by the first union.

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