James Hepburn /ˈhɛpbɜrnor, esp. British,ˈhɛbərn/Show Spelled[hep-burnor, esp. British,heb-ern]Show IPA, Earl of, 1536?–78, third husband of Mary, Queen of Scots.
Earl of, title of James Hepburn. 1535--78, Scottish nobleman; third husband of Mary Queen of Scots. He is generally considered to have instigated the murder of Darnley (1567)