CI
Constantine I King of Scots
Vitals
Died
877
Family
Children
About
Constantine I (Causantín mac Cináeda, r.862-877), King of the Picts, ruled through the darkest years of the Viking storm: the great heathen army's kinsmen took Dumbarton in 870 and carried off captives by the fleet-load, and Constantine himself was killed fighting the Norsemen in 877, by tradition at the Black Cave in Fife. His son Donald II continues our line.
Research notes
✓ DOCUMENTED (web-confirmed 25 Jul 2026): CONSTANTINE I (Causantin mac Cinaeda), KING OF THE PICTS/ALBA (r.862-877); son of Kenneth MacAlpin. Father of Donald II (our line). Direct ancestor. Added 25 Jul 2026.