Ninth master of the Order of the Temple (1180-1184).
Arnold (Arnau) was a member of a powerful family that maintained excellent relations with the royal house of Aragon. He joined the Order of the Temple in 1163 and became its master of Spain and Provence three years later. Arnold was repeatedly sent on diplomatic missions by Iberian monarchs and was elected master of the order in 1180. In Outremer he does not seem to have openly sided with any of the court parties; rather he mediated in a series of disputes. In 1184 Arnold was sent to the West together with the Hospitaller master Roger of Les Moulins and Patriarch Eraclius of Jerusalem, but died in Verona (31 October) before he was able to muster any assistance.