Guest Stars Ludivine Sagnier as Diane de Poitiers Ruby Bentall as Angelica Paul Chahidi as Charles de Bourbon Colm Meaney as King Francis Naomi Battrick as Anne d'Etampes Navid Negahban as Duke of Guise Alex Heath as Young Prince Henri Liv Hill as Young Catherine Louis Landau as Dauphin Francois Charles Dance as Pope Clement Co Starring Rebecca Gethings as Queen Eleanor Gemma Dobson as Nathalie Loïc Azorin as Footman 2 Adam Garcia as Sebastio Adam Amara as Young Francois de Guise Anna Cottis as Cook Nathan Parent as Young Louis of Bourbon Louis Pencréac'h as Young Charles de Guise Simon Parmentier as Young Antoine of Bourbon Pierre Cévaër as Footman 1 Memet Ali Alabora as Sultan Suleiman David Pearse as Cardinal Raphael Roger Levy as Leader of Soldiers Nicolas Buchoux as Doctor (Pope) Antonin Totot as Catherine's Guard Carlotta Moraru as Prostitute #1 Barbara Laurent as Prostitute #2 Lucy Edkins as Mother Superior Delcho Koprivshki as Lorenzo de Medici II