Joan, Countess of Ligny
Joan, Countess of Saint- Pol and Ligny( d. 18 September 1430, Avignon), called the Demoiselle de Luxembourg, was the daughter of Guy of Luxembourg, Count of Ligny and Mahaut of Châtillon, Countess of Saint- Pol.
At the death of Philip I, Duke of Brabant, she was his nearest living relative on the Saint- Pol side and inherited Saint- Pol and Ligny upon his death on 14 August 1430.
She was living at the time at Beaurevoir, which belonged to her favourite nephew John.
At this time, John held Joan of Arc, whom he had captured, as a prisoner.
The Demoiselle de Luxembourg showed kindness to her and pleaded with her nephew not to sell Joan to the English.
The Demoiselle died shortly thereafter; her fiefs were divided between her senior nephew, the Count of Brienne, who received Saint- Pol, and John, her favourite, who received Ligny.
The Demoiselle is a character in Philippa Gregory's 2011 historical novel" The Lady of the Rivers", which centres on her great- niece Jacquetta of Luxembourg.
Marie of Luxembourg, Countess of Vendôme
Marie of Luxembourg( died 1 April 1547) was a French princess, the elder daughter and principal heiress of Peter II of Luxembourg, Count of Saint- Pol and Soissons, and Margaret of Savoy, a daughter of Louis I, Duke of Savoy.
She belonged to the French, cadet branch of a dynasty which had reigned as Dukes of Luxembourg, and whose senior line provided several Holy Roman Emperors, before becoming extinct in 1437.
Her paternal grandparents were Louis of Luxembourg, Count of Saint- Pol and Brienne and Jeanne de Bar, Countess of Marle and Soissons.
Her maternal grandparents were Louis I, Duke of Savoy and Princess Anne of Cyprus.
Louis of Luxembourg, Count of Saint-Pol
Louis de Luxembourg, Count of Saint-Pol, of Brienne, de Ligny, and Conversano (1418 – 19 December 1475) belonged to the Ligny branch of the House of Luxemburg and was Constable of France.
Peter II, Count of Saint-Pol
Peter II ("Pierre de Luxembourg"; – 25 October 1482) was Count of Saint-Pol, of Brienne, Marle, and Soissons.
In 1478, Peter was made a knight of the Order of the Golden Fleece.
He was the second eldest son of Louis de Luxembourg, Count of Saint-Pol, and Jeanne de Bar, Countess of Marle and Soissons, daughter of Robert of Bar, Count of Marle and Soissons and Jeanne de Béthune.
He married Margaret of Savoy, the eldest surviving daughter of Louis I, Duke of Savoy and Princess Anne of Cyprus, sometime after 29 January 1464.
Their five children included:
Anthony I, Count of Ligny
Anthony I, Count of Ligny( 1450 – 1519) was the youngest son of Louis de Luxembourg, Count of Saint- Pol and his wife, Jeanne de Bar, Countess of Marle and Soissons.
In 1482, he inherited the County of Brienne from his brother Peter II, Count of Saint- Pol.
After the death of Charles of Bourbon in 1510, Anthony inherited the County of Ligny, which thereby fell back to the House of Luxemburg.
Guy V, Count of Saint-Pol
Guy V of Châtillon, Count of Saint- Pol( d. 1360 in London) was a French nobleman.
He was a member of the House of Châtillon and was the son of Count John of Saint- Pol( d. 1344) and his wife Johanna of Fiennes.
In the Hundred Years' War, he served as a royal commander in the French army.
He fought several battles against the English in Picardy.
He was one of the hostages sent to England under the terms of the Treaty of Brétigny of 1360.
He died of the plague shortly after arriving in London.
Guy was married to Johanna( d. 1392), a daughter of Lord John I of Ligny.
Since they had no children, he was succeeded as Count of Saint- Pol by his sister Mahaut and her husband Guy of Luxembourg- Ligny.
John, Count of Saint-Pol
John of Saint- Pol( died 1344) was Count of Saint- Pol between 1317 and 1344.
He was the eldest son of Guy IV, Count of Saint- Pol and Marie of Brittany.
He married in 1319 with Joanna, daughter of John I of Fiennes, and had 2 children:
Margaret of Clermont
Margaret of Clermont( 1104/05 – after 1145) was a countess of Flanders and Saint- Pol. Margaret's parents were Renaud II, Count of Clermont- en- Beauvaisis, and Adelaide, Countess of Vermandois.
Margaret was first married to Charles I, Count of Flanders.
The marriage was brief and childless.
Later, cca. 1128, Margaret married Hugh II, Count of Saint- Pol; they had two sons.
Her third husband was Baldwin of Encre.
They had one daughter.
Walter III of Châtillon
Walter III of Châtillon( 1166- 1219), also known as Gaucher III of Châtillon, was a French nobleman.
He was a son of Guy II of Châtillon and Adèle of Dreux ..
His brother was Guy III, lord of Chatillon.
In 1196 he married Elisabeth of Saint- Pol, daughter of Hugo IV, Count of Saint- Pol and in 1205, he succeeded his father- in- law as count of Saint- Pol.
Walter and Elisabeth had:
Hugh IV, Count of Saint-Pol
Hugh IV of Saint- Pol( died March 1205 in Constantinople) from the House of Campdavaine, son of Anselm of Saint- Pol, was Count of Saint- Pol from 1174 to his death, and lord of Demotika( Didymoteicho) in Thrace in 1204 – 05.
He participated in the Third and Fourth Crusades.

Question: When did Peter Ii, Count Of Saint-Pol's father die?