Name Suffix:<NSFX> King Of Picts And Scotsi Constantine I (862-877) Constantine succeeded the reign of his uncle Donald I, as ruler of the united Picts and Scots(862-877) His reign was occupied with many conflicts with the Norsemen. Olaf the White, the Danish king of Dublin, laid waste the country of the Picts and Britons year after year. In the south the Danish leader Halfdan devastated Northumberland and Galloway. Constantine was slain at a battle at Inverdovat in Fife, at the hands of another band of northern marauders. His heir was his brother Aed, who was killed by the Scots after a year and was succeeded by a nephew, Eochaid.