In which year, was the son Gofraid ua Ímair who had succeeded his father recently as king defeated by the English led by Æthelstan?
Olaf Guthfrithson Olaf Guthfrithson (Old Norse: "Óláfr Guðrøðsson" ; ; Old Irish: "Amlaíb mac Gofraid" ; died 941) was a Viking leader who ruled Dublin and Viking Northumbria in the 10th century. He was the son of Gofraid ua Ímair and great-grandson of Ímar, making him one of the Uí Ímair. Olaf succeeded his father as King of Dublin in 934 and succeeded in establishing dominance over the Vikings of Limerick when he captured their king, Amlaíb Cenncairech, in 937. That same year he allied with Constantine II of Scotland in an attempt to reclaim the Kingdom of Northumbria which his father had ruled briefly in 927. The forces of Olaf and Constantine were defeated by the English led by Æthelstan at the Battle of Brunanburh.
Kingdom of Alba The Kingdom of Alba refers to the Kingdom of Scotland between the deaths of Donald II (Domnall mac Causantin) in 900 and of Alexander III in 1286, which then led indirectly to the Scottish Wars of Independence. The name is one of convenience, as throughout this period the elite and populace of the Kingdom were predominantly Pictish-Gaels or later Pictish-Gaels and Scoto-Norman, and differs markedly from the period of the Stuarts, in which the elite of the kingdom were (for the most part) speakers of Middle English, which later evolved and came to be called Lowland Scots.