Title: Matilda I, Countess of Boulogne
Content:  Matilda was born in Boulogne, France. Her father was Count Eustace III of Boulogne. Her mother, Mary, was the daughter of King Malcolm III of Scotland and Saint Margaret of Scotland. Through her maternal grandmother, Matilda was descended from the Anglo-Saxon kings of England.
Title: Empress Matilda
Content:  Matilda was born to Henry I, King of England and Duke of Normandy, and his first wife, Matilda of Scotland, possibly around 7 February 1102 at Sutton Courtenay, in Berkshire. Henry was the youngest son of William the Conqueror, who had invaded England in 1066, creating an empire stretching into Wales. The invasion had created an Anglo-Norman elite, many with estates spread across both sides of the English Channel. These barons typically had close links to the kingdom of France, which was then a loose collection of counties and smaller polities, under only the minimal control of the king. Her mother Matilda was the daughter of King Malcolm III of Scotland, a member of the West Saxon royal family, and a descendant of Alfred the Great. For Henry, marrying Matilda of Scotland had given his reign increased legitimacy, and for her it had been an 
Title: Matilda of Chester, Countess of Huntingdon
Content:  her son John the Scot who became Earl of Chester by right of his mother. He was formally invested by King Henry III as Earl of Chester on 21 November 1232. He became Earl of Chester in his own right on the death of his mother six weeks later. Matilda died on 6 January 1233 at the age of about sixty-two. Her husband had died in 1219. In 1290, upon the death of Margaret, Maid of Norway, which caused the extinction of the legitimate line of William I, the descendants of David and Matilda became prime competitors for the crown of Scotland, including John Balliol, who was chosen king, and Robert de Brus, grandfather of king Robert I.
Title: Matilda of Saxony (1172-1209/10)
Content:  Matilda was the eldest child of the Duke of Saxony Henry the Lion and Matilda, daughter of King Henry II, and was named after her paternal grandmother by her father. When her father was expelled from the empire's territory, the family took refuge in England at the court of King Henry II where Richenza adopted the name of her mother Matilda. She remained there even after her parents returned to their home in the German empire. Several candidates were considered for Matilda's hand in marriage including the kings of Scotland and Hungary. After the death of her grandfather, King Henry II, in 1189, her uncle Richard the Lionheart arranged a 
Title: Matilda of Flanders
Content:  married Alan IV Fergent, Duke of Brittany. ; 8) Adela, (c.1067 – 1137), married Stephen, Count of Blois. Mother of King Stephen of England. ; 9) Henry (late 1068 – 1 December 1135)  King of England, married Edith of Scotland, daughter of Malcolm III of Scotland. His second wife was Adeliza of Louvain. ; 10) Agatha, betrothed to Harold II of England, Alfonso VI of Castile, and possibly Herbert I, Count of Maine, but died unmarried. Matilda and William had four sons and at least five daughters. The birth order of the boys is clear, but no source gives the relative order of birth of the daughters. 
Title: Matilda of Chester, Countess of Huntingdon
Content:  young) On 26 August 1190, she married David of Scotland, 8th Earl of Huntingdon, a Scottish prince, son of Henry of Scotland, 3rd Earl of Huntingdon, and a younger brother of Malcolm IV of Scotland and William I of Scotland. He was almost thirty years Matilda's senior. The marriage was recorded by Benedict of Peterborough. David and Matilda had seven children: Her husband David had four illegitimate children by various mistresses. On her brother Ranulf's death in October 1232 Matilda inherited a share in his estates with her other 3 sisters, and his Earldom of Chester suo jure. Less than a month later with the consent of the King, Matilda gave an inter vivos gift of the Earldom 
Title: Matilda of Béthune
Content:  Matilda, also referred to as Mathilde or Mahaut, was born about 1230, the first child of Robert VII, Lord of the castle and town of Béthune and Advocate of the Abbey of St. Vaast at Arras, who was a major landowner and one of the twelve peers of Flanders. Her mother was Elizabeth, widow of Nicholas I, Lord of Condé, and daughter of Arnold IV, last Lord of Morialmé. Robert and Elizabeth had two further daughters, Elizabeth and Sarah.
Title: Matilda of Tuscany
Content:  of Scanello and other estates to the extent of 600 mansus near the court to Bishop Landulf and the chapter of Pisa Cathedral as a soul device (Seelgerät) for herself and her parents. The deaths of both her husband and mother within two months of difference considerably augmented Matilda's power; she was now the undisputed heir of all her parents' allodial lands. Her inheritance would have been threatened had Godfrey the Hunchback survived her mother, but she now enjoyed the privileged status of a widow. It seemed unlikely, however, that Emperor Henry IV would formally invest her with the margraviate.
Title: Matilda of England, Duchess of Saxony
Content: Richenza (1172 – 13 January 1209/10), first-born child and daughter; she accompanied her parents into exile, after which she was known as Matilda, assuming that this refers to the same daughter, but the question is not beyond all doubt as it is not clear what would have prompted her name change. Betrothed in 1184 to William the Lion, King of Scotland, but the engagement was abandoned because the Pope refused a dispensation on grounds of consanguinity; married firstly in 1189 to Geoffrey III, Count of Perche and secondly in 1204 to Enguerrand III, Lord of Coucy. ; Henry (1173/1174 – 28 April 1227), named after his father and probably also after his maternal grandfather King Henry II of England; he 
Title: Matilda of Flanders
Content:  Matilda of Flanders (Mathilde; Machteld) (c. undefined 1031 – 2 November 1083) was Queen of England and Duchess of Normandy by marriage to William the Conqueror, and regent of Normandy during his absences from the duchy. She was the mother of ten children who survived to adulthood, including two kings, William II and Henry I. In 1031, Matilda was born into the House of Flanders, the second daughter of Count Baldwin V of Flanders and Adela of France. Flanders was of strategic importance to England and most of Europe as a "stepping stone between England and the Continent" necessary for strategic trade and for keeping the 

Question: Who is the mother of Matilda of Scotland?
Answer: Saint Margaret of Scotland.
Margaret of Scotland.
St. Margaret.