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.
Philip of Ibelin (died 1304)
Philip of Ibelin( died 1304) was constable of Cyprus.
He was son of Baldwin of Ibelin, Seneschal of Cyprus and Alix, daughter of Walter III of Bethsan and Theodora Comnena- Lathoumnena.
He married c. 1253 to Simone de Montbéliard, granddaughter of Walter of Montbéliard and had issue:
Mahaut of Châtillon
Mahaut of Châtillon( 1293 – 3 October 1358) was the daughter of Guy III of Châtillon and Marie of Brittany.
John Devereux of Bodenham and Decies
John Devereux of Bodenham and Decies was an Anglo- Norman nobleman living during the reigns of King John and Henry III of England.
The Devereux were a prominent knightly family along the Welsh Marches during the thirteenth century, and John Devereux was a key member of the retinue of Richard Marshal, 3rd Earl of Pembroke, and companion of Walter III de Clifford, Baron of Clifford.
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:
Guy of Enghien
Guy of Enghien (French: "Guy de Enghien"; died 1376) was the lord of Argos and Nauplia from 1356 to 1377 as vassal of the Principality of Achaea and titular duke of Athens as Guy III.
He was son of Walter III of Enghien and Isabella of Brienne.
He was married with Bonne of Foucherolles and his children were:
Adèle of Dreux
Adèle of Dreux (1145 –
aft.
1210) was a member of Norman French nobility, daughter of Robert I, Count of Dreux and his second wife Hawise of Salisbury.
She married Valéran III, Count of Breteuil on 24 June 1156, and had the following issue:
After Valéran's death in 1162, she married secondly Guy II of Châtillon and had:
She married thirdly John I de Thorotte and had:
Her final marriage was to Ralph, Count of Soissons, with whom she had:
Adèle died after 1210.
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
Mary, Countess of Blois
Mary, Countess of Blois, also known as" Marie of Avesnes",( 1200 – 1241) was countess of Blois from 1230 to 1241.
She was the daughter of Walter of Avesnes and Margaret of Blois.
In 1226, Mary married Hugh I of Châtillon, a count from Châtillon- sur- Marne, son of Gaucher III of Châtillon and Elisabeth of Saint Pol.
They had five children:
Her eldest son John, succeeded her in Blois.
Raoul II, Lord of Coucy
Raoul II, Lord of Coucy( died 1250) was a son of Enguerrand III and his wife Maria of Oisy.
In 1246 he succeeded his father as lord of Coucy.
Raoul died at the siege of El Mansoura in Egypt during the Seventh Crusade.
Raoul married Elisabeth, daughter of Walter III of Châtillon, and later remarried to Philippe of Dammartin, daughter of Simon of Dammartin.

Question: Who is the maternal grandfather of Walter Iii Of Châtillon?
Answer: Robert I, Count of Dreux