This is the third title in the series of publications ancillary to 'A New History of Ireland' and the first volume in a series of 'Irish Medieval Texts'. These are editions of medieval works dealing with the history of Ireland. Giraldus Cambrensis, 'Gerald of Wales', was a prolific writer and influential figure in the twelfth century Renaissance, a period of social, political and economic transformation in Europe. His irreplaceable account of the coming of the Normans to Ireland in AD 1166-1185 was the first Irish history book to be written by a non-Irish author. Here it is translated into English by two of Ireland's then leading scholars.