This book asks how the inhabitants and neighbours of the Eastern Roman Empire understand their identity as Romans in the centuries following the emergence of Islam as a world-religion. Its answers lie in exploring the nature of change and continuity of social structures, self-representation, and boundaries as markers of belonging to the Roman group in the period from circa AD 650 to 850. Early medieval Romanness was integral to the Roman imperial project; its local utility as an identifier was shaped by a given community’s relationship with Constantinople, the capital of the Roman state....