"Any dating of Hamlet must be tentative", cautions the New Cambridge editor, Phillip Edwards.[d] The earliest date estimate relies on Hamlet's frequent allusions to Shakespeare's Julius Caesar, itself dated to mid-1599. The latest date estimate is based on an entry, of 26 July 1602, in the Register of the Stationers' Company, indicating that Hamlet was "latelie Acted by the Lo: Chamberleyne his servantes".
In 1598, Francis Meres published his Palladis Tamia, a survey of English literature from Chaucer to its present day, within which twelve of Shakespeare's plays are named. Hamlet is not among them, suggesting that it had not yet been written. As Hamlet was very popular, Bernard Lott, the series editor of New Swan, believes it "unlikely that he [Meres] would have overlooked ... so significant a piece".
The phrase "little eyases" in the First Folio (F1) may allude to the Children of the Chapel, whose popularity in London forced the Globe company into provincial touring.[e] This became known as the War of the Theatres, and supports a 1601 dating. Katherine Duncan-Jones accepts a 1600–1 attribution for the date Hamlet was written, but notes that the Lord Chamberlain's Men, playing Hamlet in the 3000-capacity Globe, were unlikely to be put to any disadvantage by an audience of "barely one hundred" for the Children of the Chapel's equivalent play, Antonio's Revenge; she believes that Shakespeare, confident in the superiority of his own work, was making a playful and charitable allusion to his friend John Marston's very similar piece.
A contemporary of Shakespeare's, Gabriel Harvey, wrote a marginal note in his copy of the 1598 edition of Chaucer's works, which some scholars use as dating evidence. Harvey's note says that "the wiser sort" enjoy Hamlet, and implies that the Earl of Essex—executed in February 1601 for rebellion—was still alive. Other scholars consider this inconclusive. Edwards, for example, concludes that the "sense of time is so confused in Harvey's note that it is really of little use in trying to date Hamlet". This is because the same note also refers to Spenser and Watson as if they were still alive ("our flourishing metricians"), but also mentions "Owen's new epigrams", published in 1607.