Marie of Harcourt was Countess of Aumale and Baroness of Elbeuf

Lords, Marquesses and Dukes of Elbeuf

The Seigneurie of Elbeuf, later a marquisate, dukedom and peerage, was based on the territory of Elbeuf in the Vexin, possessed first by the Counts of Valois and then the Counts of Meulan before passing to the House of Harcourt. In 1265, it was erected into a seigneurie for them...

 from 1452 to 1476. She was the eldest daughter of John VII of Harcourt

John VII of Harcourt

Jean VII d'Harcourt was a count of Aumale, viscount of Châtellerault, seigneur of Mézières, of Elbeuf, of Lillebone, of La Saussaye etc....

, Count of Harcourt and Aumale and Baron of Elbeuf, and of Marie of Alençon

Marie of Alencon

Marie d'Alençon was a French noblewoman, a Princess of the Blood, and the wife of John VII of Harcourt, Count of Harcourt and of Aumale, Viscount of Châtellerault, Baron of Elbeuf, of Mézières, of Lillebone, of La Saussaye....

.

On 12 August 1416 she married Antoine of Lorraine (1400–1458), Count of Vaudémont and sire of Joinville

Joinville, Haute-Marne

Joinville is a commune in the Haute-Marne department in north-eastern France.Its medieval château-fort, which gave to members of the House of Guise their title, duc de Joinville, was demolished during the Revolution of 1789, but the 16th-century Château du Grand Jardin built by Claude de Lorraine,...

. They had:

• Frederic II of Vaudémont (1428–1470), count of Vaudémont and sire of Joinville, in 1445 married Yolande de Bar
  Yolande de Bar
  Yolande de Bar was Duchess of Lorraine and Bar . She was the daughter of Isabella, Duchess of Lorraine, and René of Anjou . Because of her various titles she is also known as Yolande de Lorraine and Yolande d'Anjou...
  
   of Anjou. She was the elder sister of Margaret of Anjou
  Margaret of Anjou
  Margaret of Anjou was the wife of King Henry VI of England. As such, she was Queen consort of England from 1445 to 1461 and again from 1470 to 1471; and Queen consort of France from 1445 to 1453...
  
  , Queen consort of England. Together Frederic and Yolande had six children.
• Jean of Lorraine, Count of Harcourt (died 1473), comte of Harcourt and of Aumale and baron of Elbeuf
• Henri (died 1505), bishop of Thérouanne (1447–1484), then of Metz (1484–1505)
• Marie (died 23 April 1455), in 1450 married Alain IX (died 1462), viscount of Rohan
  Rohan
  Rohan is a realm in J. R. R. Tolkien's fantasy era of Middle-earth. It is a grassland which lies north of its ally Gondor and north-west of Mordor, the realm of Sauron, their enemy . It is inhabited by the Rohirrim, a people of herdsmen and farmers who are well-known for their horses and cavalry....
  
  
• Marguerite of Lorraine, Dame d'Aerschot and de Bierbeke (died before 1474), in 1432 married Antoine I de Croy, Seigneur de Croy.

Upon the death of her father in 1452, she attempted to claim the entire Harcourt inheritance, to the exclusion of her younger sister Jeanne of Harcourt. By 1454, Jeanne had established herself as Countess of Aumale, and Marie as Countess of Harcourt and Baroness of Elbeuf. These lands were to pass to her second son, John, but he predeceased her in 1473, so they went to her grandson Rene.