Henry I, Count of Durbuy
Henry I( died 1097), Count of Durbuy, son of Albert II, Count of Namur, and Regilende, daughter of Gothelo I, Count of Verdun and Duke of Lorraine.
Emperor Henry IV confirmed donations made by Henry to Saint James's Church, Liège, as witnessed by Giselbert II, Count of Duras.
Henry participated in the First Crusade and died in Jerusalem in 1097.
Henry was married, but the name of his wife is unknown.
They had one child: Upon his death, Henry was succeeded as Count of Durbuy by his son Godefroi.
Hugh XI of Lusignan
Hugh XI de Lusignan, Hugh VI of La Marche or Hugh II of Angoulême( 1221 – April 6, 1250).
He succeeded his mother Isabelle of Angoulême, former queen of England, as Count of Angoulême in 1246.
He likewise succeeded his father Hugh X as Count of La Marche in 1249.
Hugh XI de Lusignan was the half- brother of King Henry III of England.
Pepin III, Count of Vermandois
Pepin III, Count of Vermandois( also known as Pepin II, Count of Senlis; French:" Pépin")( c. 846 – 893) was a Frankish noble; the Count of Senlis and Count of Vermandois( 850 – 893); Lord of Valois( 877 – 886), and later Count of Valois( 886 – 893).
He was a son of Pepin, Count of Vermandois and Valois and thus a grandson of Bernard of Italy, who was himself a grandson of Charlemagne.
The brothers of Pepin III were Herbert I, Count of Vermandois and Bernard II, Count of Laon.
Pepin III of Vermandois's wife is unknown; their son was:
Prince Robert, Count of La Marche
Prince Robert of Orléans, Petit- Fils de France, Count of la Marche( Robert Benoît Paul Henri James Marie; born 6 September 1976 in Edinburgh) is the son of the late Prince Thibaut, Count of La Marche, and Marion Mercedes Gordon- Orr.
His paternal grandfather was the late Henri, Count of Paris, who was the Orleanist claimant to the French throne with the title Henri VI.
As such, Robert would have the status of Petit- Fils de France with the style of Royal Highness.
His godparents were Viscount Paul de la Panouse and his paternal aunt Princess Claude of Orléans.
Bernard d'Armagnac, Count of Pardiac
Bernard d' Armagnac, Count of Pardiac( died 1462) was a younger son of Bernard VII, Count of Armagnac and Bonne of Berry.
He fought at the Battle of Patay in 1429.
That year he married Eleanor of Bourbon- La Marche, daughter and ultimately heir of James II, Count of La Marche.
He served as lieutenant- general in La Marche and governor of Limousin in 1441, and later as lieutenant- general of Languedoc and Roussillon in 1461.
He was the father of:
Peter II, Count of La Marche
Peter of Bourbon-La Marche (1342–1362, Lyon) was the eldest son of James I, Count of La Marche and Jeanne of Châtillon.
He was knighted by his father shortly before the Battle of Brignais, in which both father and son fought.
Both were mortally wounded during the battle, but were carried away by their soldiers to Lyon.
He survived his father only a short while, and was succeeded by his brother John.
James I, Count of La Marche
James I of Bourbon (1319 – 6 April 1362), was the son of Louis I, Duke of Bourbon and Mary of Avesnes.
He was Count of Ponthieu from 1351 to 1360, and Count of La Marche from 1341 to his death.
James II, Count of La Marche
James II of Bourbon- La Marche( 1370 – 1438 in Besançon) was the first son of John I, Count of La Marche and Catherine of Vendôme.
Anne de Bourbon
Anne de Bourbon (1380 – September 1408) was a daughter of John I, Count of La Marche and his wife Catherine of Vendôme.
She was a member of the House of Bourbon.
John I, Count of La Marche
John of Bourbon( John I/ VII, Count of La Marche and of Vendôme),( 1344 – 11 June 1393, Vendôme) was the second son of James I, Count of La Marche and Jeanne of Châtillon.

Question: Who is the paternal grandfather of Peter Ii, Count Of La Marche?
Answer: Louis I