Vikings in Iberia
Viking activity in the Iberian peninsula seems to have begun around the mid-ninth century as an extension of Viking raids on and establishment of bases in Frankia in the earlier ninth century. While connections between the Norse and Eastern Islamic lands were well-established, particularly involving the Rus') along the Volga and around the Caspian Sea, relations with the Western edge of Islam were more sporadic and haphazard. Although Vikings may have over-wintered in Iberia, no evidence has been found for trading or settlement. Indeed, the Iberian peninsula may not have offered particularly wealthy targets, in the ninth to tenth centuries. Sporadic raiding continued until the end of the Viking Age.
Viking Age
In 838, a small Viking fleet entered the River Liffey in eastern Ireland. The Vikings set up a base, which the Irish called a longphort. This longphort eventually became Dublin. After this interaction, the Irish experienced Viking forces for about 40 years. The Vikings also established longphorts in Cork, Limerick, Waterford, and Wexford. The Vikings could sail through on the main river and branch off into different areas of the country.