Person
Duncan I of Scotland
King of Alba
Donnchad mac Crinain (anglicised as Duncan I, and nicknamed An t-Ilgarach, "the Diseased" or "the Sick"; ca.
1001 – 14 August 1040) is king of Scotland (Alba) from 1034 to 1040.
He is the historical basis of the "King Duncan" in Shakespeare's play Macbeth.