In many societies with Iroquois kinship terminologies, the preferred marriage partners include not only first cousins (mother's brother's children and father's sister's children), but more remote relatives who are also classified as cross-cousins by the logic of the kinship system.
Another aspect of their kinship was that the six tribes all had matrilineal systems, in which children were born into the mother's clan and gained status through it.
However, the amount of power women held in the tribe decreased with time due to the American revolution.
Some groups in other countries also happen to be independently organized for kinship by the Iroquois system.
These include: Other populations found to have the Iroquois system are Some communities in South India use the kinship tradition described above.