Lancelot de Saint-Maard (died 1278) was the fourteenth marshal of France

Marshal of France

The Marshal of France is a military distinction in contemporary France, not a military rank. It is granted to generals for exceptional achievements...

 at the time of the Eighth Crusade

Eighth Crusade

The Eighth Crusade was a crusade launched by Louis IX, King of France, in 1270. The Eighth Crusade is sometimes counted as the Seventh, if the Fifth and Sixth Crusades of Frederick II are counted as a single crusade...

 in 1270.

Lancelot followed Louis IX

Louis IX of France

Louis IX , commonly Saint Louis, was King of France from 1226 until his death. He was also styled Louis II, Count of Artois from 1226 to 1237. Born at Poissy, near Paris, he was an eighth-generation descendant of Hugh Capet, and thus a member of the House of Capet, and the son of Louis VIII and...

 to Africa with five knights in that year. He distinguished himself in the assault on Carthage

Carthage

Carthage , implying it was a 'new Tyre') is a major urban centre that has existed for nearly 3,000 years on the Gulf of Tunis, developing from a Phoenician colony of the 1st millennium BC...

. He conducted the siege and led the charge. During a mêlée

Mêlée

Melee , generally refers to disorganized close combat involving a group of fighters. A melee ensues when groups become locked together in combat with no regard to group tactics or fighting as an organized unit; each participant fights as an individual....

, his helm was broken and he was saved by his fellow great officer

Great Officers of the Crown of France

The Great Officers of the Crown of France, known as the Grand Dignitaries of the Empire during the French Empire, were the most important officers of state of the royal court in France during the Ancien Régime and Bourbon Restoration. They were appointed by the French monarch, with all but the...

 Imbert de Beaujeu, the constable of France

Constable of France

The Constable of France , as the First Officer of the Crown, was one of the original five Great Officers of the Crown of France and Commander in Chief of the army. He, theoretically, as Lieutenant-general of the King, outranked all the nobles and was second-in-command only to the King...

.