King Duncan is a fictional character in Shakespeare's Macbeth. He is the father of two youthful sons, and the victim of a well-plotted regicide in a power grab by his first cousin, and trusted captain, Macbeth. The origin of the character lies in a narrative of the historical Donnchad mac Crinain, King of Scots, in Raphael Holinshed's 1587 The Chronicles of England, Scotland, and Ireland, a history of Britain familiar to Shakespeare and his contemporaries. Unlike Holinshed's incompetent King Duncan, Shakespeare's King Duncan is crafted as a sensitive, insightful, and generous father-figure whose murder grieves Scotland and is accounted the cause of turmoil in the natural world.