Exploring diet and status in the Medieval and Modern periods of Asturias, Spain, using stable isotopes from bone collagen

This study explored the relationship between paleodietary patterns and social inequality in rural human populations from Medieval (AD 600-1499) and Modern (AD 1500-1800) Asturias, Spain. Diets were investigated through stable carbon and nitrogen isotopes from a sample of burials from eight cemetery sites (n = 80). Social status was inferred by burial location, where individuals interred within church buildings (ad sanctos) were compared to those buried in cemeteries. While Medieval and Modern society was strongly hierarchical, burial location is only one factor in determining the status and diet of individuals. It was hypothesized that ad sanctos burials would have elevated delta N-15 values as a reflection of high-status individuals consuming protein-rich diets in comparison to lower-status peasant populations; however, results found no significant differences in delta N-15 values between those buried in ad sanctos compared to those buried in cemeteries. Rather, the results of our paleodietary reconstruction indicate that the difference in delta C-13 values is statistically significant between burial location, where ad sanctos burials have more elevated delta C-13 than commoner individuals. These elevated delta C-13 values suggest that those buried in places of prestige often consumed a different diet (more C-4 resources) from than those buried outside of church walls.