he obtained papal approval. Although this would not materialise, the King's decision to send Geoffrey of Langley as his ambassador to the Mongols revealed that he was seriously considering the prospective Mongol alliance. Eleanor of Castile died on 28 November 1290. The couple loved each other, and like his father, Edward was very devoted to his wife and was faithful to her throughout their marriage. He was deeply affected by her death, and displayed his grief by erecting twelve so-called Eleanor crosses, one at each place where her funeral cortège stopped for the night. As part of the peace accord between England and France in 1294, it was agreed that Edward should marry Philip IV's half-sister Margaret, but the marriage was delayed by the outbreak of war. Edward made alliances with the German king, the counts of Flanders and Guelders, and the Burgundians, who would attack France from the north. The alliances proved volatile and Edward was facing trouble at home at the time, both in Wales and Scotland. It was not until August 1297 that he was finally able to sail for Flanders, at which time his allies there had already suffered defeat. The support from Germany never materialised, and Edward was forced to seek peace. His marriage to Margaret in 1299 ended the war, but the whole affair had proven both costly and fruitless for the English. French possession of Gascony would not end until 1303, at which point it was partially returned to the English crown. Great Cause The relationship between England and Scotland by the 1280s was one of relatively harmonious coexistence. The issue of homage did not reach the same level of controversy as it did in Wales; in 1278 King Alexander III of Scotland paid homage to Edward, who was his brother-in-law, but apparently only for the lands he held in England. Problems arose only with the Scottish succession crisis of the early 1290s. When Alexander died in 1286, he left as heir to the Scottish throne Margaret, his three-year-old granddaughter and sole surviving descendant. By the Treaty of Birgham, it was agreed that Margaret should marry King Edward's six-year-old son Edward of Carnarvon, though Scotland would remain free of English overlordship. Margaret, by now seven years of age, sailed from Norway for Scotland in the autumn of 1290, but fell ill on the way and died in Orkney. This left the country without