John Campbell, 1st Earl of Breadalbane and Holland, Scottish soldier (b. 1636)
John Campbell, 1st Earl of Breadalbane and Holland (1636 – 19 March 1717), son of Sir John Campbell of Glen Orchy, and of the Lady Mary Graham, daughter of William Graham, 1st Earl of Airth and 7th Earl of Menteith, was a member of Scottish nobility during the Glorious Revolution and Jacobite risings and also known as "Slippery John". An astutely political man, Campbell was one of the men implicated in the Massacre of Glencoe.