Raoul II of Brienne was the son of Raoul I of Brienne, Count of Eu

Raoul I of Brienne, Count of Eu

Raoul I of Brienne was the son of John II of Brienne, Count of Eu and Jeanne, Countess of Guînes.He succeeded his father as Count of Eu in 1302, and his mother as Count of Guînes in 1332. In 1329, he was named Constable of France, and he also held the office of Governor of Languedoc.In 1315, he...

 and Guînes

Guînes

Guînes is a commune in the Pas-de-Calais department in northern France.-Geography:Guînes is located on the border of the two territories of the Boulonnais and Calaisis, at the edge of the now-drained marshes, which extend from here to the coast. The Guînes canal connects with...

 and Jeanne de Mello. He succeeded his father in 1344 as Count of Eu and Guînes, as well as in his post as 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...

.

In 1340, he married Catherine (d. 1388), the daughter of Louis II, Baron de Vaud

Louis II of Vaud

Louis II , of the House of Savoy, was the Baron of Vaud from 1302 until his death. A military man, he fought widely in Italy and, during the first phase of the Hundred Years' War, in France...

. They had no children; one illegitimate son, Jean du Bois, Lord of la Maison Forte, was legitimized in 1395.

In 1346, he was captured in the taking of Caen

Battle of Caen (1346)

The Battle of Caen in 1346 was a running battle through the streets of the Norman city during the English invasion of Normandy under King Edward III in July of that year...

 by Thomas Holland, 1st Earl of Kent

Thomas Holland, 1st Earl of Kent

Thomas Holland, 1st Earl of Kent, 2nd Baron Holand, KG was an English nobleman and military commander during the Hundred Years' War.-Early Life:...

. In 1350, he was allowed to return to France to attempt to raise money for his ransom. Upon his arrival, he was seized and summarily executed by 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,...

, for reasons that remain unclear, although it was rumored that he had pledged the English the County of Guînes for his release.