Who is this a portrait of?

It is reputed to be Jane, who was executed in February 1554 at the age of about seventeen. She looks a little older than that to us, but teenagers’ dress sense has changed in the space of 460 years and most of her portraits date from at least forty years after her lifetime.

This, by an unknown artist in about 1590 and inscribed “Lady Jayne”, is known as the Streatham Portrait but was purchased in Ipswich between 1890 and 1910 by a regular customer of Green’s, a bookseller and antique dealer based near the Central Library until comparatively recently. It can be viewed at the National Portrait Gallery but has been the subject of controversy since its rediscovery. Leading art dealer Christopher Foley has authenticated it but David Starkey disagrees. Of course, it may not be the original.

So what do you think? Here is a similar case.