I visited this display at the National Portrait Gallery 2 weeks ago.
‘This display looks in detail at fourteen portraits of people whose identities are uncertain. Dating from the sixteenth and seventeenth centuries, these portraits were once thought to depict famous sitters including Queen Elizabeth I, the young pretender to the throne Lady Arabella Stuart, and the poet and courtier Sir Thomas Overbury. These identities, however, have long since been disputed. New research, undertaken in part by MA students from the University of Bristol, is presented alongside the portraits. The likelihood of previously given identities is assessed and, in some cases, new identities are suggested.’
The display which runs until July 8th includes portraits formerly thought to be of Margaret Tudor, Queen of Scotland and Arbella Stuart.
You can view the other portraits on display here: