Constantine II

Constantine II, or Causantín mac Áeda, ruled as King of Scotland from 900 to 943 CE, succeeding Donald II. His reign, one of the longest in early Scottish history, was marked by battles against Viking invaders, particularly at the Battle of Brunanburh in 937. Constantine II also played a significant role in the ecclesiastical politics of his time, notably strengthening the ties between the Scottish kingdom and the Church. Though he abdicated the throne in 943, his influence continued as a monk, with his legacy shaping the political and religious landscape of medieval Scotland.