John V Duke of Brittany, Count of Montfort (1389-1442) (1389–1442) Parents Joan of Navarre John V, Duke of Brittany Children Isabella of Brittany Peter II, Duke of Brittany Francis I, Duke of Brittany Gilles de Bretagne Siblings Marie of Brittany, Lady of La Guerche Richard, Count of Étampes Arthur III, Duke of Brittany Margaret of Britain Blanche of Brittany Jeanne de Bretagne Partners Joan of France, Duchess of Brittany
