Thomas de Euerwyk states that he knows the science of alchemy, and can make silver, as he has proved before good men of London, and the silver has been assayed by the goldsmiths of London. Thomas Crop of London, spicer, had him come to his house with his instruments and his elixir, and had him work there before him, and then, when he understood his art, he and others of the city imprisoned him in Thomas Crop's house and forced him to make two bonds of 100 marks, so that by virtue of these bonds he was imprisoned in Newgate, while Thomas Crop withheld his elixir and instruments, and other goods and chattels to the sum of £40. He asks that he might be released, and that Thomas Crop might be ordered to bring the elixir and instruments, so that he can prove his science before them or others whom the King wishes; and that the false bonds might be destroyed.
Nature of endorsement:
Coram rege et magno consilio.The Mayor of London, Robert de Skarthburgh and William Scot, or two of them, are to be appointed to sit at Martinmas and to inquire into the truth of the things contained in the petition, and to hear and determine the trespass, and further to do what belongs to the law. And if the said Thomas de Euerwyk finds a good and sufficient security to pursue his business diligently, and to bring the said Thomas de Euerwyk to the prison in case he cannot prove his intention, he is to have a writ to the same justices to release him on mainprise on the aforesaid security.
London; Newgate prison, [London].
Goldsmiths of London; Thomas Crop of London, spicer; Robert de Skarthburgh (Scarborough); William Scot.
CPR 1334-8 pp.445-6 is dated 3 April 1337, and is clearly in response to this petition.