High Quality Content by WIKIPEDIA articles! John Joscelyn or John Joscelin (1529–1603) was an English clergyman and antiquarian as well as secretary to Matthew Parker, a Archbishop of Canterbury during the reign of Queen Elizabeth I of England. Joscelyn was involved in Parker`s attempts to secure and publish medieval manuscripts on church history, and was one of the first scholars of the Old English language. He also studied the early law codes of England. His Old English dictionary, although not published during his lifetime, contributed greatly to the study of that language. Many of his manuscripts and papers eventually became part of the collections of Cambridge University, Oxford University, or the British Library.