Yonge, Haxey, and the Privilege of Freedom of Speech in Parliament

These days, the parliamentary privilege of free speech is regarded as deriving from the assertion in Article IX of the 1689 Bill of Rights that ‘Freedom of Speech and Debates or Proceedings in Parliament ought not to be impeached or questioned in any Court or Place out of Parliament’. That it is considerably older than that is certain, but how old, very much not so.