Vanessa Redgrave and Joely Richardson are mother and daughter in real life, here they play aunt and niece.
Jonathan Rhys Meyers and Joely Richardson were previously married in the TV Series The Tudors as King Henry VIII and his sixth/final wife Catherine Parr.
Julien Landais's feature directorial debut.
In Anonymous, Joely Richardson and Vanessa Redgrave play Elizabeth Tudor, in earliest and latest years of her reign. Jonathan Rhys-Meyers played Henry VIII, Elizabeth's father, during all seasons of The Tudors, which makes the main actors of this movie royally related on screen.
The second screen version of a Henry James novel to star Vanessa Redgrave, the first being The Bostonians (1984) (in which Redgrave's daughter: "Aspern Papers" co-female lead Joely Richardson, was an extra).