sentences:  The play's date of authorship is unknown; scholars, judging on internal features, have conjectured dates ranging from 1604 to 1626.Possible allusions to the December 1613 marriage of Robert Carr, 1st Earl of Somerset have been read as indicating a date c. 1614 — though another allusion to Philip III of Spain and the Duke of Lerma seems to favor 1618–21 or later.