Charles I, Duke of Elbeuf
Charles de Lorraine (Joinville, 18 October 1556 - Moulins, 4 August 1605) was a French duke and nobleman.
He was marquis of Elbeuf from 1566 to 1582, then duke of Elbeuf from 1582 to 1605 and count of Harcourt from 1566 to 1582, lord of Rieux, baron of Ancenis and peer of France.
His parents were René de Lorraine, marquis of Elbeuf and count of Harcourt, and his wife Louise de Rieux.
Frederick I, Count of Vaudémont
Frederick of Lorraine (1371 – October 25, 1415 in the battle of Agincourt) was a Count of Vaudémont.
He was the son of Duke John I of Lorraine and younger brother of Charles II.
In 1393, Frederick married Margaret the heiress of Vaudémont and Joinville, and became Count of these lands in her right.
He founded the House of Vaudémont, a junior branch of the House of Lorraine.
His children were:
Dynastic problems in the senior line caused his great-grandson René of Vaudémont to become Duke of Lorraine as René II in 1473.
Frederick II, Count of Vaudémont
Frederick( Ferry) II of Lorraine- Vaudémont( – 31 August 1470), was Count of Vaudémont and Lord of Joinville from 1458 to 1470.
He was son of Antoine of Lorraine, Count of Vaudémont and Lord of Joinville and Marie of Harcourt, Countess of Harcourt and Aumale, as well as Baroness of Elbeuf.
He is sometimes numbered Frederick V by continuity with the Dukes of Lorraine.
In 1445, he married his cousin Yolande of Anjou( 1428 – 1483), daughter of René I of Anjou,( King of Naples, Duke of Anjou, of Bar and of Lorraine, Count of Provence), and of Isabelle, Duchess of Lorraine.
This marriage put an end to the litigation which existed between the fathers of the bride and groom, in connection with the succession of the Duchy of Lorraine.
They had six children:
In 1453 his father- in- law honoured him with the command of the troops that he sent to the Dauphin Louis to help him to fight the Duke of Savoy.
In 1456 René entrusted the government of the Duchy of Bar to Frederick, and in 1459 granted him the honorary title of Lieutenant- General of Sicily.
Henri, Duke of Elbeuf
Henri de Lorraine( 7 August 1661–17 May 1748) was the Duke of Elbeuf and member of the House of Lorraine.
He succeeded his father Charles de Lorraine to the Duchy- Peerage of Elbeuf.
He was also a Peer of France.
John II, Duke of Lorraine
John II of Anjou( Nancy, August 2, 1426 – December 16, 1470, Barcelona) was Duke of Lorraine from 1453 to his death.
He was the son of René of Anjou and Isabella, Duchess of Lorraine.
Charles II, Duke of Elbeuf
Charles II, Duke of Elbeuf
( 5 November 1596 – 5 November 1657), was a French nobleman, the son of Charles I, Duke of Elbeuf, by his wife, Marguerite de Chabot.
He succeeded his father in the Elbeuf dukedom( Elboeuf is an alternate, anglicized spelling) in 1605.
Charles III, Duke of Elbeuf
Charles III( 1620 – 4 May 1692) was the third Duke of Elbeuf and member of the House of Lorraine.
He succeeded his father Charles II, Duke of Elbeuf, to the Duchy- Peerage of Elbeuf.
His mother was an illegitimate daughter of Henry IV of France and Gabrielle d'Estrées.
He was also a Peer of France as well as titular Duke of Guise, Count of Harcourt, Lillebonne and Rieux.
René, Marquis of Elbeuf
René of Guise, Marquis d'Elbeuf (14 August 1536 – 14 December 1566) was the youngest son of Claude of Lorraine, Duke of Guise and Antoinette of Bourbon-Vendôme.
René was born at Joinville, Haute-Marne.
He married Louise de Rieux (1531 – c. 1570) on 3 February 1555.
They had two children:
He served as French ambassador to Scotland, and accompanied his niece Mary, Queen of Scots on her entrance to that country in 1561.
He was also a patron of the arts, particularly of composer Pierre Clereau of Lorraine.
Claude, Duke of Guise
Claude de Lorraine, duc de Guise (20 October 1496, Château de Condé-sur-Moselle, – 12 April 1550, Château de Joinville) was a French aristocrat and general.
He became the first Duke of Guise in 1528.
He was a highly effective general for the French crown.
His children and grandchildren were to lead the Catholic party in the French Wars of Religion.
Claude Françoise de Lorraine
Claude of Lorraine (6 October 1612 – 2 August 1648) was a daughter of Henry II, Duke of Lorraine, and Margerita Gonzaga, her sister was Nicole, Duchess of Lorraine.
She married her first cousin and was the Duchess of Lorraine by marriage.

Question: What is the date of birth of René, Marquis Of Elbeuf's father?
Answer: 20 October 1496