Data from: Ancient genomes reveal an extensive kinship network and endogamy in a Three-Kingdoms period society in Korea

The burial complex of the Imdang-Joyeong site at Gyeongsan in southeastern
Korea is notable for the large number of tombs constructed within ~100
years (4th-6th centuries CE) as well as widespread practice of human
sacrifice. Analyzing genome-wide data from 78 individuals, we detected 11,
23, 20 pairs of the first, second, and three-or-more-distant degree
relatives, respectively, revealing a dense network of kinship in the
Imdang-Joyeong society. We found 5 individuals from closely related
parents, suggesting the practice of consanguineous marriage in both grave
owners and the sacrificed. We also observed adult female descendants
buried together with their kin, unlike several recent archaeogenetic
studies in Europe reporting a strict pattern of female exogamy. We
detected no discernible genetic difference between grave owners and the
sacrificed. Our analysis provides novel bioarchaeological information on
the burial customs and social structure of the Three-Kingdoms period
society in Korea.