Contested Monarchy reappraises the wide-ranging and lasting transformation of the Roman monarchy between the Principate and Late Antiquity. The book takes as its focus the century from Diocletian to Theodosius I (284-395), a period during which the stability of monarchical rule depended heavily on the emperor's mobility, on collegial or dynastic rule, and on the military resolution of internal political crises. At the same time, profound religious changes modified the premises of political interaction and symbolic communication between the emperor and his subjects, and administrative...