AUDREHEM, ARNOUL D' (c. 1305-70), French soldier, was born at Audrehem, in the present department of Pas de Calais, near St. Omer. In June 1351 he became marshal of France. In March 1352 he was appointed lieutenant for the King in the territory between the Loire and the Dordogne, in June 1353 in Normandy, and in 1355 in Artois, Picardy and the Boulonnais. At Poitiers he was one of those who advised King John to attack the English, and, charging in the front line of the French Army, was slightly wounded and taken prisoner. He took an active part in the negotiations for the treaty of Bretigny, recovering his liberty at the same time as King John.
In 1361, as the King's lieutenant in Languedoc, he prevented the free companies from seizing the castles, and negotiated the treaty with their chiefs under which they followed Henry, count of Trastamara (later Henry II. of Castile), into Spain. In 1365 he himself joined du Guesclin in the expedition to Spain, was taken prisoner with him by the Black Prince at the battle of Najera (1367), and was unable to pay his ransom until 1369. In 1368, on account of his age, he was relieved of the office of marshal, but he was sent to Spain in 137o by Charles V., to urge his friend du Guesclin to return to France, and in spite of his age he took part in the battle of Pontvallain (Dec. 1370).
See smile Molinier, "Etude sur la vie d'Arnoul d'Audrehem, marechal de France," in Memoires presentes par divers savants a l'academie des inscriptions et belles-lettres, 2e serie, iv. (1883).