Kenneth was the second son of King Maol Chalvim I, half-brother to Duff and Prince Malcolm both. He shared Duff's fortunes loyally in their struggles with Indulf and his son Culen over the Scottish throne from 954 until 967, when Duff was slain in battle against Culen and Kenneth and his family had to flee to England and enter exile there. Four years later, however, with the aid of the Wyvern gargoyles, Kenneth returned to Scotland, overthrew Culen, and became King. ("Once Upon a Time There Were Three Brothers...")
Kenneth reigned until 995. In his old age, he began to dote on the Lady [[Finella__, who did not return his feelings for her. Constantine, the ambitious son of Culen, took advantage of this to dupe Finella into holding a secret meeting with him in the drying-house, where she could tell him in private that she wished to marry Constantine instead of him. When Kenneth entered, Constantine took him by surprise and murdered him. ("Avalon")
Kenneth had one son, Maol Chalvim, who later on became King of Scotland as Maol Chalvim II from 1005 to 1034.