Raoul I of Brienne
Raoul I of Brienne (died 1344) was the son of John II of Brienne, Count of Eu, and Jeanne of Guînes. He succeeded to Eu in 1302 and Guînes in 1332. In 1315 he married Jeanne de Mello, heiress of Château-Chinon.
Named Constable of France in 1329, he led French armies in the Hundred Years' War. Killed at a tournament in Paris, he was succeeded by his son Raoul II.