Cine s-a căsătorit cu Изабелла Де Мелен?

Peter (1298 – 3 November 1345), was the Count of Dreux in 1331-1345.

He was the youngest son of John II, Count of Dreux and Jeanne of Beaujeu. He participated in the war of Philip VI of France, fighting against the Flemish who were revolting against their count, and he fought at the Battle of Cassel in 1328.

John of Artois (29 August 1321 – 1387), called "sans Terre" (Landless), was the son of Robert III of Artois and Joan of Valois. The confiscation of his father's lands, titles, and goods for attempted fraud in 1331 had left him without an inheritance.

In 1352, John was created Count of Eu by King John II of France, a title earlier forfeited at the execution of the previous holder, Raoul II of Brienne. He was badly wounded at the Battle of Poitiers on 19 September 1356 and was captured there by the English. Enormously rich, John's ransom was sold to Edward the Black Prince by his captor Élie de Pommiers for 30,000 gold écus.

John married Isabeau of Melun (1328–1389), daughter of John I of Melun, Count of Tancarville, on 11 July 1352 and had the following issue:

• Joan (1353 – 1420), married at the Château d'Eu on 12 July 1365 Simon de Thouars (d. 1365), Count of Dreux
• John (1355 – 1363), Lord of Peronne
• Robert (1356 – 1387), later Count of Eu
• Philip (1357 – 1397), later Count of Eu
• Charles (1359 – 15 April 1368)
• Isabeau (1361 – 26 June 1379)