... Gaelic families, particularly during the eleventh century, these settlements survived as distinct places until the Anglo-Normans conquered their towns in the late twelfth century. Some historians refer to the time when the Vikings plundered rich monasteries and withdrew again in their ships as the 'hit and run' period. It lasted from 795 to 836. In 841, according to Annals of Ulster, the Vikings set up a permanent camp at the mouth of the Liffey. It was described in Irish sources as Longport. This was the beginning of the Longport phase which lasted from 841 to 902. At the end of the ninth century Irish resistance to the Longport increased and in 902 the Irish managed to defeat the ruling Dublin Norse and to expel them. The elite of the Viking families and their followers sailed across the Irish Sea to the Isle of Man, England and to Southern Scotland. But ffifteen ...

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