Mary, Countess of Ilchester
Mary, Countess of Ilchester( 1852- 1935) was an Anglo- Irish noblewoman and leading figure in London society.
She was the wife of Henry Fox- Strangways, 5th Earl of Ilchester.
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.
Adela of Normandy
Adela of Normandy, of Blois, or of England( c. 1067 – 8 March 1137), also known as in Roman Catholicism, was a daughter of William the Conqueror and Matilda of Flanders who later became the Countess of Blois, Chartres, and Meaux by marriage to Stephen II, Count of Blois.
Her husband greatly benefited from the increased social status and prestige that came with such a marriage.
She brought with her not only her bloodline, but a wedding gift of money and other movable goods from the prodigious store of Anglo- Norman wealth.
She was regent of Blois during the absence of her spouse in 1096 – 1100 and 1101 – 02, and during the minority of her son from 1102 until 1120.
Adela was the mother of Stephen, King of England and Henry of Blois, Bishop of Winchester.
The couple had ten children, though it is not certain if all were Adela's biological children.
It is only certain that she had five sons and might have had three or more daughters.
Margaret, Countess of Blois
Margaret of Blois (French: "Marguerite"; died 1230) was "suo jure" Countess of Blois from 1218 to 1230, in what is now France.
Theobald V, Count of Blois
Theobald V of Blois( 1130 – 20 January 1191), also known as Theobald the Good, was Count of Blois from 1151 to 1191.
Guy III, Count of Saint-Pol
Guy III of Châtillon, Count of Saint- Pol( died 1289) was a French nobleman, and was a younger son of Hugh I, Count of Blois and Mary, Countess of Blois.
While his elder brother John I of Châtillon succeeded to their mother's County of Blois, Guy was given their father's county of Saint- Pol- sur- Ternoise at his death in 1248.
On January 16, 1255, he married Matilda of Brabant, Countess of Artois, daughter of Henry II, Duke of Brabant and Marie of Hohenstaufen, and thereafter was a supporter of his brother- in- law Henry III against Guelders.
They had:
He joined the Eighth Crusade( 1270) and the ill- fated Crusade of Aragón of Philip III of France.
Theobald II of Blois
Theobald II, Count of Blois( Thibaut II; c. 985 – 11 July 1004) was the eldest son and heir of Odo I, Count of Blois, and Bertha of Burgundy.
The stepson of Robert II of France, he became Count of Blois, Châteaudun, Chartres and Reims after the death of his father in 996.
Theobald II left no heirs; on his death, he was succeeded by his younger brother, Odo II, Count of Blois.
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.
Mary, Countess of Falmouth and Dorset
Mary, Countess of Falmouth and Dorset( 1645 – 1679) was a British courtier.
She was one of the Windsor Beauties painted by Sir Peter Lely.
Her portrait by Lely was erroneously named" Elizabeth, Countess of Falmouth" and also as" Countess of Ossory" in some portrait prints and books in the 18th and 19th centuries, many of which were later reprinted, compounding the error.
Alix of France
Alix of France( July – August 1150 – 1197/1198) was countess consort of Blois by marriage to Theobald V, Count of Blois.
She was regent of Blois during the absence of her spouse in 1190- 1191, and regent during the minority of Louis I, Count of Blois from 1191 until 1197.

Question: What nationality is Mary, Countess Of Blois's mother?
Answer: French