king of Picts (from 790) and of Scottish Dalriada (from 811). Constantín was the first king to rule by right over both Picts and Scottish Gaels. After defeating a rival in 789, he reigned first as king of the Picts, only in 811 taking the kingship of Dalriada, which his father had held 778–81. His power base was the central Pictish territory of Fortriu.
Subjects: British History.