This volume is the culmination of an inter-disciplinary project undertaken as part of the Discovery Programme involving archaeologists, historians, linguists and place-name experts. It includes prosopographies of the kings and queens of Tara from mythology to the eighth century; a re-assessment of the nature of the kingship of Tara; legal aspects of the kingship of Tara; the origin and extent of the place name Temair; Tara and the supernatural; the archaeology and topography of the kingdom of Brega; editions of two of the earliest texts relating to the kingship of Tara.