Attainder of Duke of Northumberland and others Act 1553 (1 Mar. Sess. 2. c. 16) was an act of the Parliament of England which confirmed the attainders for High Treason against John Duke of Northumberland, Thomas Cranmer the Archbishop of Canterbury, William Marquess of Northampton, John Earl of Warwick, Sir Ambrose Dudley, Sir Andrew Dudley, Sir John Gates, and Sir Thomas Palmer.
Subsequent developments The whole act was repealed by section 1(1) of, and part IV of schedule 1 to, the Statute Law (Repeals) Act 1977, which came into force on 16 June 1977.
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References Chronological Table of the Statutes: 1235-2007, UK Stationery Office (2009) p. 52