Question: What dynasty was founded by a Viking leader in the mid 9th century? (Info A: Viking leader founder, Info B: mid 9th century)
Sentence (from "Uí Ímair"): The Uí (h)Ímair ] , or Dynasty of Ivar, was a royal Norse dynasty which ruled much of the Irish Sea region, the Kingdom of Dublin, the western coast of Scotland, including the Hebrides and some part of Northern England, from the mid 9th century.
Relevant evidence: Yes