In a review of the exhibition catalogue edited by Wells, Robert Bearman writes: "It is strongly argued that there is a striking resemblance between the newly discovered portrait (or, rather, a copy) and the Droeshout engraving of Shakespeare, and that the painting might itself have been used by Droeshout." Bearman also expresses scepticism about the link with Shakespeare's patron Wriothesley. Other experts are even more sceptical, and suggest that even the circumstantial evidence is weak. Shakespeare scholar David Scott Kastan also took the view that there were reasons to question the Cobbe portrait's provenance – whether it was in fact once owned by the Earl of Southampton or commissioned by him, as the Trust representatives believe – and to doubt whether the richly dressed man in the portrait was Shakespeare. "If I had to bet, I would say it's not Shakespeare", Kastan said. But even if it were, he said, the traditions of Elizabethan portraiture meant that it would be unwise to conclude that Shakespeare actually looked like the figure depicted in the portrait. "It might be a portrait of Shakespeare, but not a likeness, because the convention of portraiture at the time was often to idealise the subject", he said. Sir
Roy Strong, former director of the
Victoria and Albert Museum and the National Portrait Gallery, and a leading scholar of Elizabethan and Jacobean portraiture, has called Wells's claims "codswallop". Dr Tarnya Cooper, curator of 16th century portraits at the National Portrait Gallery, also voiced scepticism. While acknowledging that the Janssen portrait and the Cobbe portrait are versions of the same image, she believes it likely that both portraits represent Sir Thomas Overbury. Of Wells's identification of the sitter as Shakespeare, she said, "I respect Wells's scholarship enormously, but portraiture is a very different area, and this doesn't add up."
Hildegard Hammerschmidt-Hummel wrote that the Cobbe portrait was not an authentic likeness of Shakespeare. She noted the opinion of Eberhard J. Nikitsch, a specialist in inscriptions, who said that the script of the painting's inscription was not commonly used in early 17th-century portraits, and that it must have been added later. Wells and his colleagues have responded to the criticisms, arguing that
David Piper's original 1964 identification of the Janssen as Overbury was based on the misreading of an inventory. They also assert that the hairline was altered before 1630, because another copy of that date already showed the balding forehead. They counter Duncan-Jones's argument that the costume is too aristocratic for Shakespeare by comparing it to that worn by Shakespeare's colleague and collaborator
John Fletcher in
a portrait of the period. In conclusion, all posthumous portraits said to represent Shakespeare are either derivative or based on tradition rather than documentation. There is no authenticated image made during his lifetime whose sitter can be proven to be William Shakespeare of Stratford-upon-Avon. == Latin text ==