Guy I, Count of Soissons
Guy I (d. after 986), son of Herbert II, Count of Vermandois, and Adele, daughter of Robert I of France.
Count of Soissons, inherited from his father upon his death in 943.
There is considerable confusion about both Guy’s parentage.
Another source claims that Guy was the grandson of Herbert II, being the son of Adalbert I, Count of Vermandois, although there is no evidence that Adalbert was a Count of Soissons.
Little is known about Guy.
His name appears in a 974 charter in which Lothair of France confirmed the privileges of monastery of Saint-Thierry near Reims.
Lothair also confirmed the monastery of Saint-Eloy de Noyon in memory of Guy’s nephew Liudolf of Vermandois, Bishop of Noyon and Tournai.
Guy founded the abbey at Saint-Quentin near Péronne, and visited Rome in the mid-980s.
Guy married Adelisa, the daughter of a Count Giselbert of which nothing is known.
Guy and Adelisa had one daughter:
Upon his death, Adelisa succeeded to the county.
Herbert II, Count of Maine
Herbert II (died 9 March 1062) was Count of Maine from 1051 to 1062.
He was a Hugonide, son of Hugh IV of Maine and Bertha of Blois.
On the death of Hugh IV Geoffrey Martel, Count of Anjou occupied Maine, expelling Berthe de Blois and Gervais de Château du Loir, Bishop of Le Mans, who fled to the court of Normandy.
In 1056, Herbert escaped from Le Mans, and himself went to the court of William, duke of Normandy.
There his sister Marguerite was betrothed to Robert Curthose, but died before the marriage could take place.
Herbert paid homage to William for the county of Maine, was to marry, Adelida, a daughter of William, but died in 1062.
Bertha of Blois
Bertha of Blois (French: "Berthe de Blois"; c. 1005 — c. 1080), was a Duchess consort of Brittany and a countess consort of Maine, married in 1018 to Alain III, Duke of Brittany, and in 1046 to Hugh IV, Count of Maine.
She was the daughter of Odo II, Count of Blois and Ermengarde of Auvergne.
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.
Robert of Vermandois
Robert of Vermandois was Count of Meaux, succeeding his father, Herbert II, Count of Vermandois and his wife, Adele( Liégarde) of France.
He was married to Adelais( 914–967) of Burgundy, daughter of Giselbert, Duke of Burgundy.
They had two children:
Herbert III of Omois
Herbert III d' Omois, Herbert the old( or Herbert III of Vermandois, 910 – 980/985) was count of Omois from 943 to his death.
He was the son of Herbert II, Count of Vermandois and Adela of France, daughter of King Robert I of France.
In 943 after his father died, he succeeded as count of Omois" and received the fortress of Château- Thierry as well as the abbey of Saint- Médard, Soissons."
In 951, in his late years, he was married to Eadgifu of Wessex, daughter of Edward the Elder, King of England, and widow of Charles the Simple King of West Francia.
After his death, King Lothair divided his estates between his nephews, Eudes I, Count of Blois and Herbert IV, Count of Troyes and Meaux.
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 I, Count of Maine
Hugh I was count of Maine( 900–933).
He succeeded his father as of Count of Maine.
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.
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:

Question: Who is the maternal grandfather of Herbert Ii, Count Of Maine?
Answer: Odo II, Count of Blois