The Puritans were a significant grouping of English Protestants in the 16th and 17th centuries, including, but not limited to, English Calvinists. Puritanism in this sense was founded by some Marian exiles from the clergy shortly after the accession of Elizabeth I of England in 1558, as an activist movement within the Church of England. The designation “Puritan” is often incorrectly used, notably based on the assumption that hedonism and puritanism are antonyms. Historically, the word was used pejoratively to characterize the Protestant group as extremists similar to the Cathari of France, and according to Thomas Fuller in his Church History dated back to 1564, Archbishop Matthew Parker of that time used it and “precisian” with the sense of modern “stickler”. (From Wikipedia).