The Langham letter, published by 1580, is a significant source for the entertainments of the Elizabethan period in England. Dated from Worcester on 20 August 1575, and titled A letter: whearin, part of the entertainment vntoo the Queenz Maiesty, at Killingwoorth Castl, in Warwik Sheer in this soomerz progress 1575. iz signified: from a freend officer attendant in the coourt, vntoo hiz freend a citizen, and merchaunt of London, it describes the summer 1575 entertainment of Elizabeth I of England by Robert Dudley, 1st Earl of Leicester, at Kenilworth Castle. It is addressed to Humfrey Martyn, the son of Sir Roger Martyn, a master of the Mercers' Company.