Severely curtailed when Murchad, the son of Brian Boru, won the Battle of Clontarf, for 10 points, identify these military conflicts which pitted some roving Scandinavians against the inhabitants of a certain "Emerald Isle."
The first of these events appears to have occurred at a location called Rechru, and one of these events occurred under the leadership of a ruler known as "Caech," or "the squinty." Locations which witnessed repeated examples of these events include Iona and Skye, and a notable decrease in these events during the ninth century was called the "forty-years' rest." These events were succesfully opposed for a time by Aed Finnliath, and one of the last of these events, occurring in 1103, saw the death of Magnus Bare-Foot. A major one of these events resulted in the establishment of longhports, or settlements, in Annagassan, and these events often targeted monasteries such as the one at Armagh. Severely curtailed when Murchad, the son of Brian Boru, won the Battle of Clontarf, for 10 points, identify these military conflicts which pitted some roving Scandinavians against the inhabitants of a certain "Emerald Isle."
The first of these events appears to have occurred at a location called Rechru, and one of these events occurred under the leadership of a ruler known as "Caech," or "the squinty.
Viking invasions or raids on Ireland [accept anything involving those two entities, such as wars between Vikings and the Irish]