The Jacobite title of Duke of Mar was conferred on John Erskine, 6th/23rd Earl of Mar by the JacobitepretenderJames III and VIII. He was created Duke of Mar, Marquess Erskine or Marquess of Stirling, Earl of Kildrummie, Viscount of Garoich and Lord Alloa, Ferriton and Forrest in the notional Peerage of Scotland in 1715, with the same remainder as his Earldom, i.e. to heirs-general. The Duke's attainder by the government of the Hanoverian George I the following year was of course not recognised in Jacobite circles. He was further created Earl of Mar in the Peerage of England in 1717 and Duke of Mar in the Peerage of Ireland in 1722. These titles had the ordinary remainder to heirs male of the body, and became extinct on the death of the grantee's son in 1766. The other titles, such as they are, remain extant, although they are not recognised by the British or any other government and have not been claimed or used by their holders since the eighteenth century.
Duke's endowment was valued at $3.8 billion in 2005 making it the sixteenth-largest endowment in the U.S. The university's special academic facilities include an art museum, several language labs, the Duke Forest, a lemur center, a phytotron, a free electron laser, a nuclear magnetic resonance machine, a nuclear lab, and a marine lab.
Duke was ranked 32nd globally and 24th nationally by Shanghai Jiao Tong University in 2005 in terms of quality of scientific research and number of Nobel Prizes.
Duke requires its students to live on campus for the first three years of undergraduate life, except for a small percentage of second semester juniors who are exempted by a lottery system.