"The Two Noble Kinsmen" did not appear in any Folio edition, was not printed until 1634, although there is evidence of its being performed much earlier. The title page said "written by the memorable worthies of their time: Mr. John Fletcher and Mr. William Shakspeare ["sic"], Gent." It was not included in most editions of Shakespeare (e.g., the Cambridge/Globe editions of Wright and Clark, ca. 1863) until the latter half of the 19th century (it appears, e.g., in Dyce's collected Works of Shakespeare in 1876) but it was not generally accepted into the Shakespeare canon until well into the 20th century, when, for example, it was included in the Riverside edition of 1974.