 The period of silence may be explained by William's accompaniment on the Third Crusade with Ubaldo, Archbishop of Pisa, a pilgrimage which is referenced in a papal letter of early 1200.William established his court at Santa Igia and took the regnal name Salusio IV, continuing a tradition of alternation between the two regnal names (Torchitorio and Salusio) and also demolishing the theory that he had had any other predecessor than Torchitorio III.On 7 July 1188, the emissaries (cardinals) of Pope Clement III declared a general peace to be observed on the island.