Dorothea of Lorraine
Dorothea of Lorraine( 24 May 1545 – 2 June 1621), was by birth a member of the House of Lorraine and by marriage to Eric II, Duke of Brunswick- Lüneburg, Duchess of Brunswick- Lüneburg- Calenburg.
Born at the Château de Deneuvre, she was the third child and second daughter of Francis I, Duke of Lorraine and Christina of Denmark.
Her paternal grandparents were Antoine, Duke of Lorraine and Renée of Bourbon- Montpensier and her maternal grandparents were Christian II of Denmark and Isabella of Austria.
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.
Marie of Brittany, Countess of Saint-Pol
Marie of Brittany( 1268–1339) was the daughter of John II, Duke of Brittany, and Beatrice of England.
She is also known as Marie de Dreux.
Engelbert, Count of Nevers
Engelbert of Cleves, Count of Nevers( 26 September 1462 – 21 November 1506) was the younger son of John I, Duke of Cleves and Elizabeth of Nevers, only surviving child of John II, Count of Nevers.
In 1481, he was sent with a large army to the Bishopric of Utrecht by his brother John II, Duke of Cleves where they successfully ousted David of Burgundy.
But after the Siege of Utrecht( 1483) he had to flee, and Utrecht returned to the control of Burgundy.
He married Charlotte of Bourbon- Vendôme, daughter of John VIII, Count of Vendôme, circa 1489.
Their son Engelbert became Count of Nevers and Eu in 1491 upon the death of his maternal grandfather John II, Count of Nevers.
His eldest brother John II( 1458 – 1521) inherited Cleves.
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.
John III, Duke of Brabant
John III( 1300 – 5 December 1355) was Duke of Brabant, Lothier, and Limburg( 1312 – 1355).
He was the son of John II, Duke of Brabant, and Margaret of England.
Nicholas I, Duke of Lorraine
Nicholas of Anjou( July 1448 – 27 July 1473) was the son of John II, Duke of Lorraine and Marie de Bourbon.
Nicholas was born and died in Nancy.
He succeeded his father in 1470 as Duke of Lorraine, and assumed the titles of Marquis of Pont- à- Mousson, Duke of Calabria, and Prince of Girona, as heir apparent of Bar, Naples, and Aragon respectively.
He was engaged to Anne of France, Viscountess of Thouars, and used her title, but he did not marry her and had only one illegitimate daughter, Marguerite, wife of John IV of Chabannes, Count of Dammartin( d. 1503).
Some said he had been poisoned by agents of King Louis XI of France.
On his death the Duchy of Lorraine went to his aunt Yolande.
Christina of Salm
Countess Christina of Salm( 1575 – 1627), was a duchess consort of Lorraine; married in 1597 to Francis II, Duke of Lorraine.
Isabella, Duchess of Lorraine
Isabella (1400 – 28 February 1453) was suo jure Duchess of Lorraine, from 25 January 1431 to her death in 1453.
She was also Queen of Naples by marriage to René of Anjou.
Isabella ruled the Kingdom of Naples and her husband's domains in France as regent during his imprisonment in Burgundy in 1435-1438.
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).

Question: What is the date of death of John Ii, Duke Of Lorraine's mother?
Answer: 28 February 1453