 The work has three main focal points, the first two Byzantium and Visigothic Spain it shares in common with the Chronicle of 741, adding a third which is the Ummayad conquest.The "Chronicle" survives in three manuscripts, of which the earliest, of the ninth century, is divided between the British Library and the Biblioteca de la Real Academia de la Historia, Madrid.The other manuscripts are of the thirteenth and fourteenth centuries.