Robert Dudley, Earl of Leicester by Steven van der Muelen, c.1560's. (Yale Center for British Art)

Robert Dudley, Earl of Leicester by Steven van der Muelen, 1565.

Robert Dudley Earl of Leicester by an Unknown Artist, c.1575. (National Portrait Gallery, London)

Robert Dudley Earl of Leicester by an Unknown Artist, c.1575-80. (National Portrait Gallery, London)

Miniature thought to Robert Devereaux 2nd Earl of Essex by Isaac Oliver. (Beauchamp Collection)

Robert Devereaux 2nd Earl of Essex Attributed to Nicholas Hilliard, c.1587. (National Portrait Gallery, London)    NEW

Robert Devereaux 2nd Earl of Essex by Nicholas Hilliard, 1588. (Metropolitan Museum of Art, New York)    NEW

Robert Devereaux 2nd Earl of Essex by William Segar, 1590.    NEW

Robert Devereaux 2nd Earl of Essex by Isaac Oliver, c.1596. (The Royal Collection)    NEW

Robert Devereaux 2nd Earl of Essex by Marcus Gheeraerts the Younger, c.1596. (National Maritime Museum)    NEW

Robert Devereaux 2nd Earl of Essex by an Artist after Marcus Gheeraerts the Younger, c.1596. (National Portrait Gallery, London)    NEW

Robert Devereaux 2nd Earl of Essex by Marcus Gheeraerts the Younger, c.1596. (The Duke of Bedford)    NEW

Copy of a woodcut of Robert Devereaux 2nd Earl of Essex by R. Boissard, 1600. (Victoria & Albert Museum)