He was born an Aragonaise (from Aragon in Spain), and entered the Templars at a young age. He stayed in the provinces of Provence and Aragon, where he took part in the battles of Reconquista, and became Grand Master of the province until 1190. In 1193, after the death of Robert de Sablé, he became Grand Master of the Order, and in 1194, Pope Céléstin III gave the Templars more privileges.
During his leadership the quarrel between the Templars and Hospitaliers increased. The arbitration of Pope Innocent III was in favour of the Hospitaliers because the Pope could not forgive the Templars for making the agreements that they had with Malek-Adel, brother of Saladin.