1 Muriel; she is said to have married Robert de la Haia (although there is no firm evidence for this).
Muriel’s date of death is not known; she was buried in the Abbey of Bury St Edmunds, Suffolk.
5 Sister(?)
Her existence is uncertain and her name unknown. She was possibly the sister who married William, Count of La Ferté-Macé.
6 Isabella
She married Henry, Count of Séez, and had issue:
1 St Osmund, Bishop of Salisbury ( d.1099).
WILLIAM I
Known as ‘the Bastard’, and later as ‘the Conqueror’, he was born in c.1027/8 at Falaise Castle in Normandy. He succeeded his father as Duke of Normandy on 22 July, 1035, despite his bastardy, as Duke Robert had no legitimate son. William became Count of Maine by right of conquest in 1063. He defeated Harold II at the Battle of Hastings on 14 October, 1066, and claimed the crown of England by right of inheritance (according to William, Edward the Confessor had promised to make him his successor) and by right of conquest. William I formally acceded to the throne of England on 25 December, 1066, and was crowned on that same day in Westminster Abbey, his being the first coronation to take place in the Abbey, which set a precedent for almost all future coronations.
William I married, in c.1050/52 at the Cathedral of Notre Dame d’Eu in Normandy:
Matilda
She was the daughter of Baldwin V, Count of Flanders, by Adela, daughter of Robert II, King of France. She was born in c.1032, and was crowned Queen Consort on 11 May, 1068, either at Westminster Abbey or in Winchester Cathedral. Matilda died on 2 November, 1083, at Caen in Normandy, and was buried in the Abbey of the Holy Trinity, her own foundation known as the Abbaye aux Dames, Caen, Normandy.
Issue of marriage:
1 Robert
Known as ‘Curthose’, he was born in c.1052/4 in Normandy. He succeeded his father as Duke of Normandy on 9 September, 1087, but was deprived of the dukedom by his brother Henry I on 28 September, 1106, after losing the Battle of Tinchebrai in Normandy. Robert was henceforth a prisoner in England for the rest of his life. He died on 3, 10 or 15 February, 1134/5, still in captivity, at Cardiff Castle, and was buried in Gloucester Cathedral.
Robert married, in 1100, at Apulia, Sicily:
Sybilla
She was the daughter of Geoffrey, Count of Conversano. She died around February or March, 1103, at Rouen in Normandy, probably in childbed, although one chronicler states she was poisoned by a rival for her husband’s affections. She was either buried at Caen in Normandy, or in Rouen Cathedral, Normandy.
Issue of marriage:
(i) William
Known as ‘Clito’, he was born in 1101 at Rouen in Normandy. In the Spring of 1127, he was created Count of Flanders by right of inheritance through his grandmother Matilda of Flanders. He died on 27 July, 1128, at the Abbey of St Bertin, St Omer, France, of wounds received at the Battle of Alost, and was buried in the Abbey of St Bertin, St Omer, France.
William married firstly, in 1123 (although no record exists as to where):
Sybilla
She was the daughter of Fulk V, Count of Anjou, by Aremburga, daughter of Hélias I, Count of Maine. She was born between 1112 and 1116. Her marriage to William Clito was annulled in 1124. She married secondly, Thierry of Alsace, Count of Flanders ( d.1168), in 1134, and had issue, including:
1 Matthew I, Count of Flanders and Boulogne ( d.1173), who married Mary, daughter of King Stephen, and had issue.
Sybilla retired in middle age to the Abbey of St Lazarus in Bethlethem, where she became a nun. She died and was buried there in 1165.
William married secondly, in January, 1128 (although no record exists as to where):
Joan(or Giovanna)
She was the daughter of Ranieri, Marquess of Montferrat, by Gisla, daughter of William I, Count of Burgundy. No dates are recorded.
(ii) Henry
He was born in 1102. He was killed whilst hunting in the New Forest in Hampshire; the year is not known.
Robert also had the following illegitimate issue:
By a priest’s wife or mistress:
1 Richard (killed in the New Forest in 1100).
2 William (killed c.1110 at the Battle of Jerusalem, fighting the Infidel). He was Lord of Tortosa.
By an unknown woman:
3 Daughter (name not known); she married Hélias of Saint-Saëns, Count of Arques.
2 Richard
He was born before 1054 (or 1056?) in Normandy, and is said to have been created Duke of Bernay in Normandy. He was gored to death by a stag in 1075 or 1081, whilst hunting in the New Forest, Hampshire, and was buried in Winchester Cathedral.
3 Cecilia
She was born in c.1054/5 in Normandy, and entered the novitiate at the Abbey of the Holy Trinity, Caen, her mother’s foundation, on 18 June, 1066. She was professed there as a nun on 5 April, 1075, and was elected Abbess of Caen in 1112. She died on 3 July, 1126, at Caen, where she was buried in the Abbey of the Holy Trinity.
4 Adeliza
She was possibly born in 1055. Ordericus Vitalis states that she took religious vows early in life. Robert of Torigny states that she was at one time betrothed to Harold II when he was Earl of Wessex. She was probably dead by 5 January, 1066.
5
William II(
6 Constance
She was born in c.1057 or c.1061 in Normandy. She married Alan IV Fergant, Duke of Brittany ( d.1119), at Caen, Normandy, in c.1086. She died on 13 August, 1090, perhaps poisoned by her servants, and was buried in the Church of St Melans, near Rhedon, Brittany. Sandford, writing in the 17th century, perpetrated the myth that she was married 25 years and was buried in the Abbey of Bury St Edmunds, Suffolk.
7
Adela(
8
Henry I(
9 Agatha
Alternatively called Elgiva, or Margaret, she may have been born in 1064. She was married by proxy to Alfonso VI ( d.1109), King of Galicia and Léon, at the Abbey of the Holy Trinity, Caen, Normandy, but died before 1074, before the marriage could be consummated. She was buried in Bayeux Cathedral, Normandy.
10 Matilda
Very little is known of her. She died unmarried before 1112.
Note: There is no evidence that either William or Matilda were the parents of Gundrada, Countess of Surrey. Charters attesting this have been proved spurious.
WILLIAM I
He died on 9 September, 1087, at the Priory of St Gervais, Rouen, Normandy, of wounds received at the siege of Mantes. He was buried in St Stephen’s Abbey, Caen, Normandy, his own foundation.
He was succeeded in England by his son William (and in Normandy by his son Robert).
William II
FATHER:
William I(
MOTHER:
Matilda of Flanders(
SIBLINGS: (