852 - Vikings left the Seine area

Viking Dragon ship the Bayeux tapestry
France
Rorics brothers son Godfred made winter camp in the Seine area with a viking army, but was convinced to leave after he received a huge sum of money from the Franks.
Sweden
Ansgar went on a second christian mission to Birka, Sweden, with recommendations from king Horik and king Louis the German, the Swedish king Olaf treated him friendly.
Ireland
160 Norwegian ships returned to Ireland to fight with Danes in a sea-battle and Ragnall became the first king of Dublin, he ruled 4 years. A viking camp was established at Carlingford Lough (county of Louth).
9th century Viking raiders fighting