Vikings plagued the coasts of Ireland and Britain in the 790s. By the
mid-ninth century vikings had established a number of settlements in
Ireland and Britain and had become heavily involved with local politics.
A particularly successful viking leader named Ivarr campaigned on both
sides of the Irish Sea in the 860s. His descendants dominated the major
seaports of Ireland and challenged the power of kings in Britain during
the later ninth and tenth centuries. This book provides a political
analysis of the deeds of Ivarr's family from their first appearance in
Insular records down to the year 1014. Such an account is necessary in
light of the flurry of new work that has been done in other areas of
Viking Studies. In line with these developments Clare Downham provides a
reconsideration of events based on contemporary written accounts.