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.
Mercer", and other biographical details, such as his self-description as a "Merchauntaventurer, and Clark of the Councell chamber doore", for which office he writes that he obtained through the patronage of Leicester.
[2] The argument for Patten's authorship is based on similarities of form, style, subject matter, and phraseology common to the letter and Patten's acknowledged work and the close resemblance between his known hand and that which appears in two annotated copies of the letter.
Sir Walter Scott quoted from it in his novel Kenilworth (1821), leading to the republication of the Letter in London the same year.