Question: Who is the mother-in-law of Frederick Ii, Count Of Vaudémont?

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.
Eric of Lorraine
Eric of Lorraine( 14 March 1576 – 27 April 1623), count of Vaudémont, was a Bishop of Verdun and half brother of Louise of Lorraine, Queen consort of France.
Antoine, Count of Vaudémont
Antoine of Vaudémont( – 22 March 1458) was Count of Vaudémont and Sieur de Joinville from 1418 to 1458.
By marriage, he was also Count of Harcourt, Count of Aumale, and Baron of Elbeuf from 1452 to 1458.
Bertha, Duchess of Lorraine
Bertha of Lorraine( or Bertha of Swabia)( b.c. 1123/30 – d. 1194/ 5) was a member of the Hohenstaufen dynasty.
She was the daughter of Frederick II, Duke of Swabia and, through marriage to Matthias I duke of Lorraine, she was duchess of Lorraine( c.1138-1176).
Jean, Count of Harcourt
John of Lorraine- Vaudémont( died 1473) was a younger son of Antoine of Lorraine, Count of Vaudémont and Marie of Harcourt.
He was Count of Harcourt and Count of Aumale, as well as Baron of Elbeuf.
His mother was the eldest daughter of John VII of Harcourt, Count of Harcourt and Aumale.
Her brother, John VIII of Harcourt, her father's heir, died in 1424.
In anticipation of this, she assigned to John the County of Harcourt in 1448.
In 1449, at the breakdown of the Truce of Tours, he was sent as an ambassador to Philip III, Duke of Burgundy, by King Charles VII of France.
In 1452, his maternal grandfather died.
John attempted to secure the whole inheritance for himself and his mother.
After his father, he was Count of Harcourt and Count of Aumale( as" John VI").
While briefly effective, by 1454, his mother's younger sister had gained control of the County of Aumale.
He was appointed captain of Angers in 1469, and later seneschal and governor of Anjou.
He died in 1473, unmarried, and was succeeded by his nephew, René II, Duke of Lorraine.
Priscilla Pointer
Priscilla Marie Pointer( born May 18, 1924) is an American stage, film and television character actress.
She began her career in the theater, including productions on Broadway.
Later, Pointer moved to Hollywood to act in films and on television.
She is the mother of Amy Irving, therefore making her the former mother- in- law of filmmakers Steven Spielberg and Bruno Barreto and the mother- in- law of documentary filmmaker Kenneth Bowser, Jr.
Veronika of Desenice
Veronika of Desenice( died 17 October 1425) was the second wife of Frederick II, Count of Celje.
Theobald I, Duke of Lorraine
Theobald I( or)( c. 1191 – 17 February 1220) was the duke of Lorraine from 1213 to his death.
He was the son and successor of Frederick II and Agnes of Bar.
Theobald joined Otto IV, Holy Roman Emperor, on 4 July 1214 at the Battle of Bouvines, where he was taken in prisoner in the rout.
He was quickly liberated.
In 1216, in the Champagne War of Succession, he supported Erard I, Count of Brienne, in his quarrel with Theobald IV, Count of Champagne, who was supported by Philip II of France, Frederick II, Holy Roman Emperor, and Henry II of Bar.
Frederick, the suzerain of Lorraine, considered it a felony to support a candidate he opposed and occupied the city of Rosheim, which he had given to Frederick II of Lorraine.
Theobald responded in 1218, retaking Rosheim and ravaging Alsace.
Frederick did not hesitate to counterattack and invaded Lorraine and took and burned Nancy, its capital.
He then besieged and took the castle of Amance, where Theobald was taking refuge.
He was imprisoned and constrained to recognise the suzerainty of the count of Champagne, the legitimacy of Erard of Brienne's claim to Champagne, and relinquish several lordships to attain liberty again.
He never recovered his lost land and prestige and died in 1220.
He had married, in 1206, Gertrude, only child and heir of Albert II, count of Dagsburg and Metz.
They had no children.
His successor was Matthias his brother; his widow remarried his old rival, Theobald of Champagne.
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.
Yolande, Duchess of Lorraine
Yolande (2 November 1428, Nancy – 23 March 1483, Nancy), was Duchess of Lorraine (1473) and Bar (1480).
She was the daughter of Isabella, Duchess of Lorraine, and René of Anjou (King of Naples, Duke of Anjou, Bar and Lorraine, Count of Provence).
Though she was nominally in control of major territories, she ceded her power and titles to her husband and her son.
In addition, her younger sister was Margaret of Anjou, Queen of England.
In the 19th century, a romanticised version of her early life was popularised by the play "King René’s Daughter" by Henrik Hertz, in which she is portrayed as a beautiful blind princess living in an isolated garden paradise.
It was later adapted to Tchaikovsky's opera "Iolanta".
There is no evidence that she was ever blind.

Answer: Isabella, Duchess of Lorraine