Odo V
Odo V was Count of Troyes and of Meaux, including Vitry- le- François, from 1089 to his death, in 1093.
Son of Theobald III and Adele of Valois, he was succeeded by his younger brother, Hugh, Count of Champagne.
Scholastique of Champagne
Scholastique of Champagne( 1172–1219) was the daughter of Marie, Countess of Champagne and Henry I, Count of Champagne.
Hugh II, Count of Maine
Hugh II( 920- before 992), Count of Maine, son of Hugh I, Count of Maine, and an unknown mother, probably a daughter of Gauzlin II, Count of Maine.
He was, like his father, a vassal of his uncle Hugh the Great.
After the death of Hugh the Great, Hugh II allied himself Fulk II the Good, Count of Anjou, and Theobald the Trickster, Count of Blois.
Hugh later joined Theobald ’s son Odo against Seinfroy, Bishop of Le Mans.
Hugh and Odo had to flee and seek refuge with Bouchard I, Count of Vendôme, in the areas that form the Bas- Vendômois.
In 939 he fought alongside Alan II, Duke of Brittany and Judicael Berengar against the Vikings at the Battle of Trans- la- Forêt.
Hugh had by his unknown wife: Hugh III, Count of Maine, Fulk of Maine,( d. after 992) and Herbert “ Baco ” of Maine( d. after 1046), regent of Hugh IV, Count of Maine.
Hugh was succeeded as Count of Maine by his son Hugh III.
Renaud II, Count of Clermont-en-Beauvaisis
Renaud II of Clermont(" Renaud/ Rainald II de Clermont"; 1075 – 1152), son of Hugh I, Count of Clermont- en- Beauvaisis, and Marguerite de Roucy( daughter of Hilduin IV, Count of Montdidier).
Renaud became Count of Clermont- en- Beauvaisis upon his father ’s death in 1101.
Alberic I, Count of Dammartin
Alberic( Aubry) de Mello( d. after 1162), Count of Dammartin, based on his marriage to Adela, daughter of Hugh I, Count of Dammartin.
It is believed that Aubry was the son of Gilbert de Mello and Richilde de Clermont, daughter of Hugh, Count of Clermont- en- Beauvais,( d. 1101) and Margaret, daughter of Hilduin IV, Count of Roucy
Theobald III, Count of Blois
Theobald III of Blois (French: "Thibaut")
(1012–1089) was count of Blois, Meaux and Troyes.
He was son of Odo II, Count of Blois and Ermengarde of Auvergne.
Lambert I, Count of Louvain
Lambert I of Louvain nicknamed" The Bearded"( born in Louvain, Duchy of Lotharingia, East Francia c. 950, died in Florennes, County of Namur, Duchy of Lower Lorraine, Holy Roman Empire on 12 September 1015) was the first Count of Louvain in 1003.
He was killed by Godfrey II, Duke of Lower Lorraine in battle for Godfrey's claim of Count of Verdun.
He was the son of Reginar III, Count of Hainaut and Adela d' Eguisheim, daughter of Hugh V, Count of Eguisheim.
His brother was Reginar IV, Count of Mons.
He was the husband of Gerberga of Lower Lorraine, and father of:
Herbert II, Count of Vermandois
Herbert II( died 23 February 943), Count of Vermandois, Count of Meaux, and Count of Soissons.
He was the first to exercise power over the territory that became the province of Champagne.
Hugh, Count of Champagne
Hugh (1074 – c.1125) was the Count of Champagne from 1093 until his death.
Hugh was the third son of Theobald III, Count of Blois and Adele of Valois, bearing the title Count of Bar-sur-Aube.
His older brother Odo V, Count of Troyes, died in 1093, leaving him master of Troyes, where he centred his court, and Vitry-le-François.
In this way the three contiguous countships that formed the core of an emerging Champagne were united in his person, and though he preferred "Count of Troyes", the oldest of his lordships and site of the only bishopric in his domains, many contemporary documents call him the count of Champagne, the title preferred by his descendants.
His first recorded act, a monastic gift in 1094, became the oldest document of the comital archive.
The act of his that resonated longest in history was his grant of lands in 1115 to the monk Bernard of the reformed Benedictines at Cîteaux—the Cistercians—in order to found Clairvaux Abbey, a Cistercian monastery at Clairvaux (in the present Ville-sous-la-Ferté), in a wild valley of a tributary of the Aube, where Bernard was appointed abbot and became famous as Bernard of Clairvaux.
Hugh's charter makes over to the new foundation Clairvaux and its dependencies, fields, meadows, vineyards, woods and water.
A deeply affectionate letter from Bernard to Hugh survives, written in 1125, as Hugh went off for a third time to fight in the Holy Land, joining the Knights Templar, leaving his pregnant wife, and disinheriting his son Odo – according to later sources
, Hugh believed himself impotent and never acknowledged his son.
Instead, he transferred his titles to his nephew, who became Theobald II of Champagne.
Odo's two sons, Odo II of Champlitte and William of Champlitte were important figures in the fourth crusade.
Hugh married first Constance, daughter of King Philip I of France and Bertha of Holland.
Their only child, a son called Manasses, died young.
He married second Isabella, daughter of Stephen I, Count of Burgundy and niece of Pope Callixtus II
and they had issue:
When Hugh became a Knight Templar himself in 1125, the Order comprised few more than a dozen knights, and the first Grand Master of the Templars was a vassal of his, Hugues de Payens, who had been with him at Jerusalem in 1114.
Hugh was also the generous patron of the abbeys of Montieramey Abbey and of Molesme, making grants from his castle of Isle-Aumont, south of Troyes.
In a surviving letter to him from Ivo of Chartres (Letter CCCXLV), the Bishop of Chartres reminds him of his obligations of marriage, perhaps to deter him from making vows of continence.
Blanche of Navarre, Duchess of Brittany
Blanche of Navarre( 1226 – 12 August 1283), also known as Blanche of Champagne, was the daughter of Theobald the Troubador, King of Navarre and Count of Champagne, and his second wife Agnes of Beaujeu.
She was a member of the House of Champagne.
By her marriage to John I, Duke of Brittany, she became Duchess consort of Brittany.

Question: Who is Hugh, Count Of Champagne's paternal grandfather?
Answer: Odo II, Count of Blois