Donald II

Donald II, known as Domnall mac Causantín, reigned as King of Scotland from around 889 to 900 CE. Succeeding the enigmatic rule of Eochaid and Giric, Donald II was the first monarch to be styled "King of Alba," denoting the unified realm of Picts and Scots. His reign was characterized by challenges from Viking invasions, reflecting the broader Norse threats to the British Isles during this period. While records of his rule are limited, Donald II's tenure symbolizes the early years of the unified Scottish kingdom and the struggles of the nascent Kingdom of Alba against external adversaries.