Mary of Avesnes Duchess of Bourbon, Countess of La Marche and Clermont-en-Beauvaisis (1280–1354) Parents Philippa of Luxembourg John I of Hainaut Children Beatrice of Bourbon, Queen of Bohemia Marie de Bourbon, Princess of Achaea Jeanne de Bourbon Peter I Margaret of Bourbon James I Siblings John of Beaumont Alice of Hainault William I, Count of Hainaut Isabelle of Avesnes Jan van Oostervant Willem Cuser Aleida de Hainaut Simon Heer van Bruelis Marguerite d'Avesnes Partners Louis I, Duke of Bourbon
