A legal document concerning the transfer and feoffment of the Isle of Man and related premises. The Duke of Atholl directs that John, Earl of Dunmore, William (now Lord Mansfield), and John Murray, as heirs and assigns, shall be seized of the Isle subject to a term of five hundred years. The document ratifies and confirms earlier feoffment terms dated 14 November 1737 and references another tripartite indenture from approximately 6 April 1700.