Lady Jane Grey
The Treason Act 1547 made it high treason to interrupt the line of succession to the throne established by the Act of Succession. Edward VI meant to bypass this Act in his "Devise for the Succession", issued as letters patent on 21 June 1553, in which he named Lady Jane Grey as his successor. Prevailing over Lady Jane Grey, Mary ascended the throne under the terms of the Third Succession Act.