sentences:  During Beadwulf's tenure at Candida Casa, the nation was weakened by dynastic strife within its leadership, with kings regularly murdered, deposed, or exiled.Vikings were beginning their increasingly destructive raids on Northumberland, sacking Lindisfarne in 793 and Jarrow in 794.The bishoprics were also in decline and if there is any foundation for Alcuin's 796 letter to the clergy of York regarding simony, ecclesiastical offices were available for purchase.