Jodie Comer Marguerite de Carrouges Matt Damon Sir Jean de Carrouges Adam Driver Jacques Le Gris Ben Affleck Pierre d'Alençon Harriet Walter Nicole de Carrouges Marton Csokas Crespin Alex Lawther King Charles VI William Houston Herald at the Duel Oliver Cotton Jean de Carrouges III Zeljko Ivanek Le Coq Nathaniel Parker Sir Robert de Thibouville Tallulah Haddon Marie Aurélien Lorgnier Carrouges' Priest Bryony Hannah Alice Thomas Silberstein Palace of Justice Clerk Ian Pirie Henri Daniel Horn Argentan Herald Michael McElhatton Bernard de Latour Sam Hazeldine Thomin Dubois Clive Russell King's Uncle Julian Firth King's Uncle Zoé Bruneau Lady Marie Chamaillart Chloé Lindau Pierre's Mistress Adam Nagaitis Adam Louvel Caoimhe O'Malley Elizabeth John Kavanagh Le Gris' Priest Simone Collins Agatha Clare Dunne Celia Christian Erickson Louis the Old Farmer Serena Kennedy Queen Isabeau Quentin Ogier Clergy Paul Bandey Clergy Martin Vaughan Lewis Clergy Brontis Jodorowsky Magistrate Peter Hudson Magistrate Dimitri Michelsen Treasury Bureaucrat Stephen Brennan Physician Bosco Hogan Priest at Duel Kyle Hixon Pierre's Tailor Florian Hutter Dowry Lawyer Sam Chemoul Teenager Carrouges' Estate Chloe Harris Peasant Woman (uncredited)