Burke calls him Kenneth II. Kings of Picts & Alba. King of Galloway.
See Europäisch Stammtafeln Band II tafel 67.

Accoriding to national myth, he’s the first King of the Scots, founding the state in 843.

The origin myth of the kingdom of Alba traced its foundation to the supposed destruction of Pictland by Kenneth MacAlpin, and its kings were chosen from the male line descendants of Kenneth