Claim: From Viterbo in 1267, Jayme Alaric de Perpignan carried the letter from Clement and James to the Mongols for them to join the Franco-Mongol alliance.
Evidence: From Viterbo in 1267, they sent a letter, carried by Jayme Alaric de Perpignan. Clement and James had been encouraged by this, towards the possibility that the Mongols might join the Europeans in a Franco-Mongol alliance against the Muslims. Jayme Alaric de Perpignan was an ambassador sent by Pope Clement IV and James I of Aragon to the Mongol ruler Abaqa Khan in 1267.