The Eighth Crusade was a crusade launched by Louis IX of France in 1270. The Eighth Crusade is sometimes counted as the Seventh crusade, if the Fifth crusade and Sixth Crusade of Frederick II are counted as a single crusade. The Ninth Crusade is sometimes also counted as part of the Eighth Crusade.
Louis was disturbed by events in Syria, where the Mamluk sultan Baibars had been attacking the remnant of the Crusader states. By 1265 Baibars had captured Nazareth, Haifa, Toron, and Arsuf. Hugh III of Cyprus, nominal king of Jerusalem, landed in Acre to defend that city, while Baibars marched as far north as Armenia, which was at that time under Mongol control.
These events led to Louis' call for a new Eighth Crusade in 1267, although there was little support this time; Jean de Joinville, the chronicler who accompanied Louis on the Seventh Crusade, refused to go. Louis was soon convinced by his brother Charles of Anjou to attack Tunis first, which would give them a strong base for attacking Egypt for the Eighth Crusade, the focus of Louis' previous crusade as well as the Fifth Crusade before him, both of which had been defeated there. Charles, as King of Naples, also had his own interests in this area of the Mediterranean. The sultan of Tunis also had connections with Christian Spain and was considered a good candidate for conversion. In 1270 Ludwid sailed from Cagliari in Sicily and landed on the African coast in July, a very unfavourable season for landing. Much of the army became sick due to poor drinking water, and on August 25 Louis himself died, one day after the arrival of Charles. Charles proclaimed Louis' son Philip III the new king, but due to his youth Charles became the actual leader of the Eighth Crusade.
Due to further diseases the siege of Tunis was abandoned on October 30 by an agreement with the sultan. In this agreement the Christians gained free trade with Tunis, and residence for monks and priests in the city was guaranteed, so the Eighth Crusade could be regarded as a partial success. Charles now allied himself with Prince Edward of England, who had arrived in the meantime. When Charles called off the attack on Tunis, Edward continued on to Acre, the last crusader outpost in Syria. His time spent there is often called the Ninth Crusade.
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