Piers Plowman

Piers Plowman (written c. 1370–86; possibly c. 1377) or Visio Willelmi de Petro Ploughman (William's Vision of Piers Plowman) is a Middle English allegorical narrative poem by William Langland. It is written in un-rhymed, alliterative verse divided into sections called passus (Latin for "step").

Like the Pearl Poet's Sir Gawain and the Green Knight, Piers Plowman is considered by many critics to be one of the greatest works of English literature of the Middle Ages, preceding and even influencing Chaucer's Canterbury Tales. Piers Plowman contains the first known reference to a literary tradition of Robin Hood tales.

There exist three distinct versions of the poem, which scholars refer to as the A-, B-, and C-texts. The B-text is the most widely edited and translated version; it revises and extends the A-text by over four thousand lines.

There is also a Z text of Piers Plowman, discovered in the 1980s. The Z-text is composed of elements from the A and C versions. The Z-text is not distinctly authorial (critics have suggested it may be of scribal production) and thus, its authorship is greatly contested.