expedition into Flanders was abortive. He made peace with Philip in 1298 and left Guy to his fate. The French invaded again in 1299 and captured both Guy and his son Robert in January 1300. The Flemish burghers, however, found direct French rule to be more oppressive than that of the count. After smashing a French army at the Battle of the Golden Spurs in 1302, Guy was briefly released by the French who were negotiating terms to end the Siege of Tournai. His subjects, however, refused to compromise; and a new French offensive in 1304 destroyed a Flemish fleet at the Battle of Zierikzee and defeated the Flemings at the Battle of Mons-en-Pévèle. Guy was returned to prison, where he died. Family Count Guy had two daughters named Margaret by two wives. In June 1246 he married Matilda of Béthune (d. 8 November 1264), daughter of Robert VII, Lord of Bethune, and had the following children: Marie (d. 1297), married William of Jülich (d. 1278), son of William IV, Count of Jülich. She had a son, William. Married in 1285 Simon II de Chateauvillain (d. 1305), Lord of Bremur. Robert III of Flanders (1249–1322), his successor. William (aft. 1249 – 1311), Lord of Dendermonde and Crèvecoeur, married in 1286 Alix of Beaumont, daughter of Raoul of Clermont and had issue. His son John of Dampierre, Lord of Crèvecœur married to Beatrice, daughter of Guy IV, Count of Saint-Pol. John of Flanders (1250 – 4 October 1290), Bishop of Metz and Bishop of Liège Baldwin (1252–1296). Margaret (c. 1253 – 3 July 1285), married in 1273 John I, Duke of Brabant Beatrice (c. 1260 – 5 April 1291), married c. 1270 Floris V, Count of Holland Philip (c. 1263 – November 1318), Count of Teano, married Mahaut de Courtenay, Countess of Chieti (d. 1303), married c. 1304 Philipotte of Milly (d. c. 1335), no issue. In March 1265 he married Isabelle of Luxembourg (d. September 1298), daughter of Henry V of Luxembourg, and had the following children: Beatrice (d. 1307), married c. 1287 Hugh II of Châtillon Margaret (d. 1331), married on 14 November 1282 at Roxburgh, Alexander of Scotland (son of Alexander III of Scotland), married on 3 July 1286 in Namur, Reginald I of Guelders. Isabelle (d. 1323), married 1307 Jean de Fiennes, Lord of Tingry and Chatelain of Bourbourg, mother of Robert de Fiennes, Constable of France.