[4] William took the initiative in constructing a castle, the "Castrum Arnaldi" (or Chastel Arnoul) at Yalo, to guard the road between Jerusalem and Jaffa in 1132–33, along with some citizens.
[5] William was on good terms with his successor Peter and in 1134 he gave the canons of the Holy Sepulchre the charge of the shrine of the Mount of Temptation who agreed to found a daughter house there.
[6] He also sanctioned the formation of a confraternity between the four communities of Augustinian canons in Jerusalem (those of the Holy Sepulchre, the Templum Domini, the Mount of Olives and Mt Zion) at some point between 1130 and 1136.
[7] In 1139 Patriarch William was displeased by the actions of the archbishop of Tyre, Fulcher of Angoulême, who travelled to Rome to receive his pallium from Pope Honorius II and protest the division of his archdiocese into two ecclesiastical territories: the northern suffragans were under the authority of the Latin patriarch of Antioch and only the southern sees remained under Fulcher's control.
[9] In April 1141 the papal legate Alberic of Ostia arrived together with the Armenian Catholicos Gregory III and convened a legatine council in the Templum Domini.