Edward III of Bar was made marquis of Pont-à-Mousson by his father Robert I of Bar

Robert I of Bar

Robert I of Bar was Marquis of Pont-à-Mousson and Count and then Duke of Bar. He succeeded his elder brother Edward II of Bar as count in 1352, and the county was promoted to a duchy in 1354...

 in 1399 (his mother was Mary of France, daughter of John II of France

John II of France

John II , called John the Good , was the King of France from 1350 until his death. He was the second sovereign of the House of Valois and is perhaps best remembered as the king who was vanquished at the Battle of Poitiers and taken as a captive to England.The son of Philip VI and Joan the Lame,...

) and held it until his death. He then became heir to the duchy of Bar following the death of his elder brothers Henry and Philippe at or soon after the battle of Nicopolis

Battle of Nicopolis

The Battle of Nicopolis took place on 25 September 1396 and resulted in the rout of an allied army of Hungarian, Wallachian, French, Burgundian, German and assorted troops at the hands of an Ottoman force, raising of the siege of the Danubian fortress of Nicopolis and leading to the end of the...

 in 1396.

In 1405, Charles VI of France

Charles VI of France

Charles VI , called the Beloved and the Mad , was the King of France from 1380 to 1422, as a member of the House of Valois. His bouts with madness, which seem to have begun in 1392, led to quarrels among the French royal family, which were exploited by the neighbouring powers of England and Burgundy...

 charged him with defending the Boulonnais

Boulonnais (land area)

The Boulonnais is a coastal area of northern France, around Calais and Boulogne-sur-Mer. It has a curved belt of chalk downs which run into the sea at both ends, and geologically is the east end of the Weald-Artois Anticline.- Administration :...

, then threatened by the English. At the end of 1406 he participated in the Guyenne campaign under the orders of Louis of Orleans, but dysentry decimated the French forces. After Louis's assassination in 1407, Edward joined John the Fearless and rallied the Burgundians. Succeeding his father on 12 April 1411, Edward was killed at the battle of Agincourt

Battle of Agincourt

The Battle of Agincourt was a major English victory against a numerically superior French army in the Hundred Years' War. The battle occurred on Friday, 25 October 1415 , near modern-day Azincourt, in northern France...

and succeeded by his brother (he never married, though he left several illegitimate children).