Guest Stars Ruby Bentall as Angelica Ludivine Sagnier as Diane de Poitiers Antonia Clarke as Mary, Queen of Scots Paul Chahidi as Charles de Bourbon Colm Meaney as King Francis Lee Ingleby as Henri (Older) Naomi Battrick as Anne d'Etampes Navid Negahban as Duke of Guise David Denman as Pierre Marques Co Starring Rebecca Gethings as Queen Eleanor Jean-Stan Du Pac as Little Boy Matisse George Jaques as Francis II Loïc Azorin as Footman 2 Gemma Dobson as Nathalie Steve Furst as Dr. Fernel Jordan Bigot as Charles IX Katie Haigh Mayet as Geraldine Marques Phillippe Chauvin as Preacher #2 Valérie Even as Noble Woman #1 Rémy Adriaens as Footman #3 Maxime Lefrançois as Captain Casal Cédric Weber as Guard