William the Conqueror to go on pilgrimage to Jerusalem. Although some of his supporters tried to dissuade him from undertaking the journey, Robert convened a council in January 1035 and had the assembled Norman magnates swear fealty to William as his heir before leaving for Jerusalem. He died in early July at Nicea, on his way back to Normandy. William faced several challenges on becoming duke, including his illegitimate birth and his youth: the evidence indicates that he was either seven or eight years old at the time. He enjoyed the support of his great-uncle, Archbishop Robert, as well as the king of
William the Conqueror in either late 1039 or October 1040, Gilbert of Brionne took charge of William. Gilbert was killed within months, and another guardian, Turchetil, was also killed around the time of Gilbert's death. Yet another guardian, Osbern, was slain in the early 1040s in William's chamber while the duke slept. It was said that Walter, William's maternal uncle, was occasionally forced to hide the young duke in the houses of peasants, although this story may be an embellishment by Orderic Vitalis. The historian Eleanor Searle speculates that William was raised with the three cousins who later became important in his career