‘king of the Picts’ (876–8), anachronistically regarded as 4th king of Scotland. Son of Kenneth I, he succeeded his brother Constantine I. This was the worst period of Scandinavian devastation. Two rivals on record are the obscure Giric and Æd's nephew Eochaid, son of Rhun of Strathclyde. Either of these may have been Æd's final opponent in battle at Strathallan, which left Æd fatally wounded.