Migration and mobility in Roman Beirut: The isotopic evidence

Rescue excavations in Beirut, Lebanon, have uncovered large burial assemblages dating to the Roman period. As the first Roman colony in the Near East, the human skeletons from Beirut provide a unique opportunity to explore migration to the city using biomolecular analyses. This study applies strontium and oxygen isotope analysis to nineteen human skeletons and establishes primary local reference values through the analysis of human and faunal dentition and the utilisation of already available environmental and botanical data from Lebanon. Two possible incomers and two definite migrants – both male and female – were identified who originated from different parts of the Empire. The comparison of isotopic data with the material culture of the graves illustrates how migrant identity is not always expressed in burial, and also how archaeological data can supplement biomolecular results in identifying the type of migration involved in a colonial setting. The results from this study contribute to our understanding of the Roman colonization of Beirut, highlight female mobility during the Roman period, and establish local human isotope ratios which can be used in future research on migration to the city and in the region.