Guthrum, Oskitel and Hamond attacked Wessex with 3500 vikings and fought all the way to the channel coast and captured the Wareham fortress.
King Alfred the great made peace with the vikings, but a lack of respect from the vikings for the peace treaty caused more plundering and a viking army attacked Essex. Halfdan Ragnarsson became the first king of York, but was deposed by his own kin in 877.
16 september: Vikings sailed up the Seine to Meulan and moved to Conde, threatening the County Hainaut.
|Alfred the Great Jewel|
Later Guthrum was unlucky he lost 120 ships during a storm at Swanage, Dorsetshire.