The First Crusade (1095-1099) culminated in the establishment of the Latin Kingdom of Jerusalem, Principality of Antioch and counties of Edessa and Tripoli in the Levant, and led to the eventual foundation of the nearby Empire of Constantinople and Kingdom of Cyprus. The pre-existing populations of these six Latin Christian-ruled polities were composed of religiously, denominationally, ethnically, tribally and regionally diverse Eastern Mediterranean communities. Powerfully simplistic modern preconceptions of the nature and quality of cross-cultural relationships between the Latins and Eastern Mediterranean groups during the ‘crusades’ era are often inspired by contemporary conflict and colonial legacies. They are, in turn, frequently misappropriated to drive further cross-cultural conflict in the modern Eastern Mediterranean, and intolerance more widely. This interdisciplinary project explores the complex realities of historical cross-cultural relationships in the ‘Latin East’ by analysing the treatment and representation of different Eastern Mediterranean groups in the large extant body of Latin laws and legal texts.