The Northumbrian Renaissance or Northumbria's Golden Age is the name given to a period of cultural flowering in the Anglo-Saxon kingdom of Northumbria, broadly speaking from the mid-seventh to the mid-eighth centuries. It is characterised by a blend of insular art, Germanic art and Mediterranean influence. Authors associated with this golden age include Bede and Alcuin; artefacts include the Lindisfarne Gospels and associated manuscripts, the Ruthwell Cross and associated sculptures, and, arguably, the Franks Casket. An illustration of the cultural activity of Northumbria during this period is given by Alcuin's De Sanctis et Pontificibus Ecclesiæ Eboracensis, which gives particular attention to Bishop Æthelbert of York.