Pericles, Prince of Tyre is a Jacobean play written at least in part by William Shakespeare and included in modern editions of his collected works despite questions over its authorship, as it was not included in the First Folio. It was published in 1609 as a quarto, was not included in Shakespeare's collections of works until the third folio, and the main inspiration for the play was Gower's Confessio Amantis. Various arguments support the theory that Shakespeare was the sole author of the play, notably in DelVecchio and Hammond's Cambridge edition of the play, but modern editors generally agree that Shakespeare was responsible for almost exactly half the play — 827 lines — the main portion after scene 9 that follows the story of Pericles and Marina. Modern textual studies suggest that the first two acts, 835 lines detailing the many voyages of Pericles, were written by a collaborator, who may well have been the victualler, panderer, dramatist and pamphleteer George Wilkins. Wilkins published The Painful Adventures of Pericles Prince of Tyre which is the prose version of the story, and drew from Lawrence Twines' The Pattern of Painful Adventures. Pericles was one of the seventeen plays that were in print during Shakespeare's life, and was reprinted 5 times between 1609 and 1635.