Countess Sibyl D' Anjou FLANDERS
- Born: Abt 1105-1115, , Anjou, France
- Married (1): Abt 1122-1123
- Married (2): 1130, , , France
- Married (3): 1134
- Died: Abt 1165-1167
Other names for Sibyl were Sibilla, Sybil, Sybilla and ANJOU Countess.
Ancestral File Number: 9HPW-53. User ID: 151278759.
Countess of ANJOU.
Kings and Queens of Great Britain, Genealogical Chart, Anne Taute and Romilly Squire, Taute, 1990: "William The Clito, Mar =1 Sybilla Daughter of Fulk V Count of Anjou Annuled 1124, Died 1165."
The Political History of England, Vol II, George Burton Adams Longmans Green and Co, 1905, Ch VII, p172: 
"About the same time, Henry's old enemy, Amaury of Montfort, disliking the strictness of Henry's rule and the frequency of his demands for money, began to work among the barons of Normandy and with his nephew, the Count of Anjou, in favour of William Clito. It was already clear that Henry's hope of another heir was likely to be disappointed, and Normandy would naturally be more easily attracted to the son of Robert than England. The first step was one which did not violate any engagement with Henry, but which was nevertheless, a decided recognition of the claims of his nephew, and an open attack on his plans. Fulk gave his second daughter, Sibyl, in marriage to William Clito, and with her thecounty of Maine, which had been a part of Matilda's dower on her marriage with Henry's son William. Under the circumstances, this was equivalent to an announcement that he expected William Clito to be the Duke of Normandy..."
p174: "Against Fulk of Anjou Henry seems to have found his ally in the pope. The marriage of William Clito with Sibyl, with all that it might carry with it, was too threatening a danger to be allowed to stand, if inany way it could be avoided. The convenient plea of relationship, convenient to be remembered or forgotten according to the circumstances, was urged upon the pope. The Clito and his bride were related in no nearer degree than the tenth, according to the reckoning of the canon law, which prohibited marriage between parties related in the seventh degree, and Henry's own children, William in his earlier, and Matilda in her later marriage, with the sister and brother of Sibyl, were equally subject to censure. But htis was different case. Henry's arguents at Rome- Orderic tells us that threats, prayers, and money were combined- were effective, and the marriage was ordered dissolved. Excommunication and interdict were necessaryto enforce this decision; but at last, in the spring of 1125, Fulk was obliged to yield, and William Clito began his wanderings once more, follwed everywhere by the `long arm' of his uncle.
"At Easter time in 1125, probably a few days before the date of the papal bull of interdict which compelled the dissolution of the marriage of William and Sibyl, a papal legate, John of Crema, landed in England..."
p179:  "William Clito's tenure of his countship was of but little more than a year, and a year filled with fighting. Boulogne was a vassal county of Flanders; but the new count, Stephen, undoubtedly carrying out the directions of his uncle, refused him homage, and William endeavoured to compel his obedience by force. Insurrections broke out behind him, due in part to his own severity of rule; and the progress of one of his rivals who was destined to succeed him, Dietrich of Elsass, was alarming. Louis attempted to come to his help but was checkedby a forward move of Henry with a Norman army. The tide seemed about to turn in Henry's favour once more, when it was suddenly impelled that way by the death of William. Wounded in the hand by a spear, in a fight at Alost, he died a few days later...But for Henry this opportune death not merely removed from the field the most dangerous rival for Matilda's succession, but it also re-established the English influence in Flanders. Dietrich of Elsass became count with the consent of Louis, and renewed the bond with England. Not long afterwards by the influence of Henry he obtained as wife, Geoffrey of Anjou's sister Sibyl, who had been taken from William Clito."
Ancestral File Ver 4.11 9HPW-53 Sibilla (Sibyl) (Sybil) D'ANJOU [COUNTESS OF FLANDERS] Born Abt 1105 Anjou France Mar 1123 (Div) William III Prince of NORMANDY 8XJ0-QM Died 1165/1167.
Sibyl married Count William Clito Normandy FLANDERS, III, son of Duke Robert England NORMANDY, II and Duchess Sibyl De Conversana NORMANDY, about 1122-1123. The marriage ended in divorce. (Count William Clito Normandy FLANDERS, III was born in 1101 and died in 1128 in Battle, Alost, Flanders, Brabant.)
Sibyl also married Theodorici D' EU in 1130 in , , France.
Sibyl also married Count Dietrich D' Alsace FLANDERS, son of Duke Thierry ALSACE LORRAINE and Gertrude De FLANDERS, in 1134. (Count Dietrich D' Alsace FLANDERS was born about 1099 in , Alsace, France and died on 17 Jan 1168.)