Guy XIV de Laval, François de Montfort-Laval, (28 January 1406 – 2 September 1486, Châteaubriant), comte de Laval, baron de Vitré and of La Roche-Bernard, seigneur of Gâvre, of Acquigny, of Tinténiac, of Montfort and Gaël, of Bécherel, was a French nobleman, known for his account of Joan of Arc. He and his brother André de Lohéac were simultaneously vassals of the duke of Brittany and of the king of France. Life Origins Guy was the son of Guy XIII de Laval and Anne de Laval (1385–1466). Through his mother he was grandson of Guy XII de Laval and of Jeanne de Laval, second wife of constable Bertrand du Guesclin. In 1420, Guy XIV, only just fourteen years old, was the second person to put his signature to the petition sent to the king of England to demand the release of Arthur III, Duke of Brittany, the future constable, who had been a prisoner since the Battle of Agincourt. Arthur was freed in September of that year. In 1424, he accompanied Arthur to the brilliant reception he had prepared for queen Yolande of Aragon in his château d'Angers. He thus worked to detach the Breton captain from the English and bring about a rapprochement between Brittany and France. Companion of Joan of Arc On 8 June 1429, at Selles-en-Berry (Selles-sur-Cher), he rejoined the royal army which reunited Joan of Arc and the duke of Alençon to seek the liberation of the Loire Valley after the raising of the siege of Orléans. He has left, in a letter to his mother, a living portrait of Joan of Arc, of whom he was a fervent admirer. They distinguished themselves at Jargeau, Beaugency, and above all Patay, where he fought in the vanguard. Coronation of Charles VII With his brother André de Lohéac he followed the sovereign to Reims and assisted at the coronation of Charles VII of France on 17 July 1429, replacing Philip the Good, count of Flanders (who was also the Duke of Burgundy). Among the favours distributed by the king on this occasion, the territory of Laval was raised to a county, and Guy de Laval was made governor of Lagny in 1430. House of Brittany On 1 October 1430, at Redon, Guy XIV married Isabelle of Brittany (died 1444), daughter of John VI, Duke of Brittany. He was betrothed, in 1420, to Marguerite of Dreux, Isabelle's sister, who