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 Lee Ingleby as Henri (Older) Alex Heath as Young Prince Henri Liv Hill as Young Catherine Rupert Everett as Charles V Co Starring Rebecca Gethings as Queen Eleanor Jean-Stan Du Pac as Little Boy Matisse George Jaques as Francis II Jade Croot as Edith Steve Furst as Dr. Fernel Tristan Bowles as Page Boy Antonin Brunelle-Remy as Ambush Boy Nicolas Robin as Gabriel de Lorges de Montgommery Matthieu Lionnard as Guard Rahima Stefo Linard as Soldier Sean Guégan as Prisoner #3