In 1267, Pope Clement IV and King James I of Aragon sent an ambassador to the Mongol ruler Abaqa in the person of Jayme Alaric de Perpignan.
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Audi filia et and De sinu patris were two letters written by either Pope Urban IV (1165–1264) or Pope Clement IV (1200–1268).
The papal election of 12 October 1264 - 5 February 1265 was convened after the death of Pope Urban IV and ended by electing his successor Pope Clement IV.