Kin Groups and Descent. Matrilineages were organized into fifteen matrisibs. Among the Cayuga, Onondaga, Seneca, and Tuscarora, the matrisibs were further organized into moieties. Among the Mohawk and the Oneida, no Moiety division was recognized. Descent was matrilineal. In Modern times, the stress placed on patrilineal inheritance by Canadian authorities has undermined the traditional system.
Kinship Terminology. Traditional kinship terminology followed the Iroquoian pattern. In one's own and the first ascending and descending generations parallel relatives were classed with one's lineal relatives and cross relatives were referred to separately.