Guillaume de Montfort of Hainaut
Guillaume de Montfort, also known as Guillaume of Hainaut, was a French nobleman of the 10th and 11th centuries, the first Lord of Montfort- l' Amaury.
He was succeeded as Lord of Montfort- l' Amaury by his son Amaury I de Montfort.
Isabel of Conches
Isabel of Conches, (fl. 1090) wife of Ralph of Tosny, rode armed like a knight during a conflict in northern France during the late 11th century.
Orderic Vitalis described Isabel of Conches, daughter of Simon I de Montfort, as brave as "several Amazons and the legendary Camilla, who fought as ally of the Italian king Turnus in the Aeneid."
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
Amaury II de Montfort
Amaury II( d. 1089) was the fourth lord of Montfort l'Amaury.
He was the son of Simon I, Lord of Montfort, and Isabel de Broyes.
He succeeded his father and died soon after.
He, in turn, was succeeded by his half brother Richard de Montfort.
Maruchi Fresno
Maruchi Fresno( February 14, 1916 – July 19, 2003) was a Spanish film actress.
Fresno appeared in around sixty films and television series during her long career.
In 1947 she played the role of Isabel of Aragon in the historical film" The Holy Queen".
Kaya Alp
Kaya Alp was, according to Ottoman tradition, the son of Kızıl Buğa and the father of Suleyman Shah, who was, in turn, the grandfather of Ertuğrul, and the great grandfather of the Ottoman Empire founder, Osman I.
Fred Le Deux
Frederick" Fred" Le Deux( born 4 December 1934) was an Australian rules footballer who played with Geelong in the Victorian Football League( VFL).
He is the grandfather of Tom Hawkins.
Beatrice, Countess of Montfort
Beatrice de Montfort, Countess of Montfort -l' Amaury( c. December 1248 /1249 – 9 March 1312) was a ruling sovereign countess of Montfort from 1249 until 1312.
She was also countess of Dreux by marriage to Robert IV of Dreux, Count of Dreux.
She was the ancestor of the Dukes of Brittany from the House of Montfort- Dreux which derived its name from her title.
Amaury I de Montfort
Amaury I de Montfort( died) was Lord of Montfort, son of Guillaume de Montfort of Hainaut, the first Lord of Montfort.
The castle of Montfort l'Amaury, of which he started the construction, was completed by his son Simon I de Montfort, who succeeded him as Lord of Montfort.
He married Bertrade, whose origins are unknown.
He and his wife had three children:
Simon I de Montfort
Simon I de Montfort (c. 1025 – 25 September 1087) was a French nobleman.
He was born in Montfort l'Amaury, in the Duchy of Normandy, and became its lord.
He was the son of Amaury I de Montfort and Bertrade.
At his death he was buried about away in Epernon, because it was the site of the fortress he was instrumental in constructing.

Question: Who is Isabel Of Conches's paternal grandfather?
Answer: Amaury I de Montfort