CI
Constantine I King of Scots
Vitals
Died
877
Family
Children
About
Constantine the First ruled at the height of the Viking assault on Scotland and was killed fighting Norsemen about 877.
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.