Lord Edward's Crusade, sometimes called the Ninth Crusade, was a military expedition to the Holy Land under the command of Edward, Duke of Gascony (future King Edward I of England) in 1271–1272. It was an extension of the Eighth Crusade and was the last of the Crusades to reach the Holy Land before the fall of Acre in 1291 brought an end to the permanent crusader presence there.
The Ninth Crusade saw Edward clash with the Mamluk sultan Baibars, with both achieving limited victories. The Crusaders were ultimately forced to withdraw since Edward had pressing concerns at home and felt unable to resolve the internal conflicts within the remnant Outremer territories. It is arguable that the Crusading spirit was nearly "extinct" by this period as well. It also foreshadowed the imminent collapse of the last remaining crusader strongholds along the Mediterranean coast.
From Dover to Acre
Following the Mamluk victory over the Mongols in 1260 at the Battle of Ain Jalut by Qutuz and his general Baibars, Qutuz was assassinated, leaving Baibars to claim the sultanate for himself. As Sultan, Baibars proceeded to attack the Christian crusaders at Arsuf, Atlit, Haifa, Safad, Jaffa, Ascalon, and Caesarea. As the Crusader fortress cities fell one by one, the Christians sought help from Europe, but assistance was slow in coming.
In 1268, Baibars captured Antioch, thereby destroying the last remnant of the Principality of Antioch, securing the Mamluk northern front and threatening the small Crusader County of Tripoli. With royal and papal approval, Edward "took the cross" on 24 June 1268. Louis IX of France organized a large crusader army with the intent of attacking Egypt, but diverted it instead to Tunis. Louis himself died there in 1270. He had loaned Edward 70,000 livres tournois for his crusade.
Edward and his brother Edmund prepared an expedition to join Louis at Tunis, but it was delayed several times in the summer of 1270 because their father, King Henry III of England, could not make up his mind whether to join it or not. On the advice of his councilors, he opted to stay in England and the crusaders embarked at Dover on 20 August.
Edward traveled slowly through France, arriving in Aigues-Mortes, the same port from which Louis had embarked, in late September (a month later than expected). He went from there to Sardinia, where he waited a month before crossing to Tunis, where he arrived on 10 November, too late for the fighting. In fact, the Treaty of Tunis that ended the crusade had been signed on 30 October. Although Edward had played no role in its negotiation, the treaty obligated its signatories—Philip III of France, Charles I of Sicily and Theobald II of Navarre—to prevent Edward from attacking Tunis. Edward was also excluded from receiving a portion of the indemnity paid to the crusaders for leaving.
On 18 November, Charles granted Edward a safe-conduct allowing him to stay in Sicily while contemplating his next steps. Although the other crusaders decided each to return home, Edward opted to continue on his way to the Holy Land to assist Bohemund VI, Prince of Antioch and Count of Tripoli, against the Mamluk threat to the remnant of the Kingdom of Jerusalem. On 9 May 1271 Edward finally arrived at Acre with a fleet of eight sailing vessels and thirty galleys. He brought a small but not insignificant contingent of no more than 1,000 men, including 225 knights.
Operations in the Holy Land
Edward arrived at Acre while it was still under siege. His arrival caused Baibars to change his plans and turn away from Acre. In the meantime, Edward discovered that the Venetians had a flourishing trade with the Mamluks, providing the latter with timber and metal needed for armaments. In addition, they controlled the slave-trade along with the Genoese, in which they carried Turkish and Tartar slaves from the Black Sea ports to Egypt. However, he could not prevent such businesses, as they had licenses from the High Court at Acre.
Crusader raids
The forces under Edward's command were much too small to take on the Mamluks in a straight battle, being unable to even stop the Mamluks from seizing the nearby Teutonic Montfort Castle. They settled for launching a series of raids. After capturing Nazareth, Edward raided St Georges-de-Lebeyne but accomplished little other than burning some houses and crops, on top of losing a few men to the heat.