Or Stuart, Lord Darnley (1545-1567) British aristocrat, second husband of Mary Queen of Scots from 1565, and father of James I of England (James VI of Scotland).
On the advice of her secretary, David Rizzio, Mary refused Darnley the crown matrimonial; in revenge, Darnley led a band of nobles who murdered Rizzio in Mary's presence. Darnley was assassinated 1567.
He was killed in an explosion (while ill in bed), probably by James Bothwell, who became Mary's third husband. Mary's role in the plot remains controversial.