When King Amalric died of dysentery on 11 July 1174, the High Court met to discuss who should succeed him. Sibylla's 13-year-old brother, Baldwin, would have been the obvious successor had there not been fears of his incipient leprosy. The only serious alternative to him was Sibylla, then aged about 15. Female succession had been grounded in recent law and had precedent, as Sibylla's grandmother Melisende preceded her sons on the throne. However, Sibylla was young, inexperienced, and unmarried. No bachelor in the
Latin East was fit to marry her; Count
Raymond III of Tripoli and
Baldwin of Antioch were too closely related, and a marriage to one of the barons in the kingdom could have caused resentment among the others. A match had to be found abroad, but since that would have taken too long, Baldwin IV was chosen with the expectation that a husband would be found for Sibylla to succeed him if he proved to be affected.
Marriage Count Raymond of Tripoli, who was by then also
prince of Galilee in the Kingdom of Jerusalem, became regent for the young king on the basis of being the nearest male relative. He allowed Sibylla and Baldwin's mother, Agnes, to return to court, and Agnes had strong attachment to and influence on her children in the following years. Baldwin's condition deteriorated rapidly after his accession, and since it was clear that he had leprosy, it became imperative to arrange a marriage for Sibylla. The groom chosen by Raymond and the High Court was
William "Longsword" of Montferrat, son of Marquis
William V of Montferrat and cousin of both Holy Roman Emperor
Frederick Barbarossa and King Louis VII of France. Additionally, William V took part in the
Second Crusade, displaying his family's dedication to the Kingdom of Jerusalem. William arrived in the East in October 1176; by that time, the
barons of the Kingdom of Jerusalem were no longer so well disposed towards him, likely because Emperor Frederick had suffered military setbacks against the
Lombard League and could no longer be expected to aid the Catholics in the East. William of Tyre reported that William Longsword's marriage to Sibylla was "unwelcome to and openly opposed by certain of those men by whose advice he had been summoned." The marriage had to go forward, however, because Sibylla's prospects could irreparably diminish if she were to be jilted again. According to William of Tyre, William Longsword became Sibylla's husband in November, just forty days after his arrival, as Baldwin and Sibylla had sworn on oath the previous year. William was subsequently granted the
County of Jaffa and Ascalon, making Sibylla the only countess in the kingdom besides her mother, who had been granted the title after her annulment, which conferred a certain distinction. Baldwin may have offered to
abdicate in William's favour, but William declined because he knew he lacked support among the nobility. Regardless, Sibylla and William appeared to have a stable future together, and could easily take authority if required.
Countess Around April 1177, shortly after he and Sibylla conceived a child, William fell critically ill; when Baldwin came to visit his brother-in-law, he fell gravely ill too. William died in June, by which time Sibylla's pregnancy was known, and she was left as the
suo jure countess of Jaffa and Ascalon. William's death left his contemporaries dismayed, with many suspecting that he had been murdered. William of Tyre made little note of it, implying that his intemperate lifestyle and excessive eating and drinking led to his death. Sibylla and Baldwin's first cousin Count
Philip I of Flanders arrived in Jerusalem soon after William's death, but declined regency when the King, who was still terribly ill, hastily and eagerly offered it to him. Rather, one of Philip's major goals was to arrange for Sibylla and her half-sister Isabella to marry Robert and William, respectively, sons of his favourite liegeman Robert V of Béthune. Presumably, Philip wanted these men to surrender their lands in Flanders to him and take over the Kingdom of Jerusalem. Immediately recognizing Philip's attempt to undermine Baldwin's authority, the High Court countered that custom entitled the widowed Sibylla to a year of mourning, which was especially seemly given her pregnancy. Philip and the High Court could not agree on which of them had the final say in choosing Sibylla's next husband. The
lord of Ramla,
Baldwin of Ibelin, led the opposition to Philip and hoped to be the chosen suitor. Sibylla gave birth to a son, named
Baldwin, in the winter of 1177–78. The boy was named after his maternal uncle, indicating that he was to become his heir. Her mourning period ended in June 1178, and it became appropriate to negotiate a new marriage for her. Baldwin of Ibelin's suit was well known, but rejected; his brother
Balian was allowed to marry Sibylla's stepmother, Queen Maria, in late 1177. On 1 July 1178, Sibylla began to be associated with her brother in public acts, and he therefore acknowledged her as next in line for the throne. This was reminiscent of their grandmother Melisende's association with her father, King
Baldwin II. Baldwin IV thus confirmed Sibylla's status as his heir presumptive. The High Court agreed unanimously that Sibylla should next marry Duke Hugh III of Burgundy; according to William of Tyre, they said "that we should concede to him in matrimony the lord king's sister, whom first the marquis (of Montferrat) had had, on the same conditions." Baldwin IV so desperately wanted a brother-in-law to take over the kingdom for him that he empowered the king of France to choose an alternative candidate if Hugh refused. However, unlike Stephen, Hugh would not become Baldwin IV's direct heir to the throne since Sibylla now had a son. Hugh intended to sail to the East in early 1180 and marry Sibylla at
Easter. A group of
crusaders from France, led by Count
Henry I of Champagne,
Peter I of Courtenay, and
Philip of Dreux, arrived in July 1179, but they failed to prevent the Egyptian ruler
Saladin from destroying the crusader fortress of
Le Chastellet. Regardless, they remained in the kingdom in the hopes of assisting at Sibylla and Hugh's
coronation the following year. However, Hugh never set sail, possibly not wishing to leave his young son,
Odo, as his regent in Burgundy.
Remarriage Things took an unexpected turn during the
Holy Week in 1180. The brewing conflict in France that followed the accession of King
Philip II prevented Hugh from leaving his domain. Contemporary chroniclers
Ernoul and William of Tyre relate the events differently. According to Ernoul, Sibylla wrote to Baldwin of Ibelin when he was in Saladin's captivity, promising that she would convince her brother to allow their marriage if he could ransom himself, but her mother persuaded her to marry
Guy of Lusignan, a Poitevin knight, instead. Historian Bernard Hamilton argues that Ernoul's account, though accepted in older historiography, is biased in favour of the Ibelins. William of Tyre reports that during the Holy Week in 1180, Count Raymond III of Tripoli and Prince
Bohemond III of Antioch were marching towards Jerusalem to stage a
coup against King Baldwin. Hamilton concludes that they intended to force the King to have Sibylla marry Baldwin of Ibelin and to then abdicate, and that the King foiled their plan by arranging her marriage to Guy. The marriage took place very quickly; the ceremony was canonically invalid and public notice was not given. King Baldwin had never approved Baldwin of Ibelin, possibly because the
Ibelin family had only
recently risen to lordly rank. Another factor was that Saladin had been informed by Raymond and Bohemond's conspiracy to enthrone Baldwin of Ibelin and therefore set Baldwin of Ibelin's ransom to that of a king; a successor with such a debt was not desirable. From 1180, Sibylla held Jaffa and Ascalon with Guy, and had four daughters with him, including Alice and Maria. Their marriage divided the nobility into a faction supporting Guy (Sibylla; the king; their mother, Agnes; their stepfather,
Raynald,
lord of Sidon; their maternal uncle,
Joscelin of Courtenay; and the
lord of Oultrejordain,
Raynald of Châtillon) and a faction opposing him (Sibylla's paternal kinsmen Bohemond of Antioch and Raymond of Tripoli; Baldwin and Balian of Ibelin; and her stepmother, Maria Komnene). In order to prevent the opposing party from setting up a rival claimant, the King took his mother's advice and, in October 1180, betrothed his and Sibylla's half-sister, Isabella, to
Humphrey IV of Toron, stepson of Raynald of Châtillon. From March 1181, both Sibylla and Guy were associated with King Baldwin in public acts. {{tree chart |border=0|Geoffrey| |Sibylla| |Baldwin| |Joscelin| |Agnes|y|Amalric|y|Maria|~|Balian| |Stephanie|~|Raynald|~|Constance| |Raymond|William=
William V of Montferrat|Amalric=
Amalric of Jerusalem|Maria=
Maria Komnene|Balian=
Balian of Ibelin|Agnes=
Agnes of Courtenay|Joscelin=
Joscelin of Courtenay|Constance=
Constance of Antioch|Raymond=
Raymond III of Tripoli|Baldwin=
Baldwin III of Jerusalem|Geoffrey=
Geoffrey V of Anjou|Sibylla=
Sibylla of Anjou|Raynald=
Raynald of Châtillon|Stephanie=
Stephanie of Milly {{tree chart |border=0|Henry| |Philip| |William|y|Sibylla|~|Guy| |Baldwin| |Isabella|~|~|~|~|~|Humphrey| |Bohemond| |Maria|~|Manuel| |BaldwinA|William=
William of Montferrat|Sibylla=
Sibylla of Jerusalem|Guy=
Guy of Lusignan|Isabella=
Isabella I of Jerusalem|Humphrey=
Humphrey IV of Toron|Baldwin=
Baldwin IV of Jerusalem|Bohemond=
Bohemond III of Antioch|Henry=
Henry II of England|Philip=
Philip I of Flanders|Maria=
Maria of Antioch|Manuel=
Manuel I Komnenos|BaldwinA=
Baldwin of Antioch ==Disinheritance==