This paper examines a socio-economic mutual osmosis between Villahermosa, one of major villages belonging to the Valencian Arenós’ barony, and Puertomingalvo, a southern Aragonese one under the ecclesiastical domain of the Archbishop of Zaragoza, both of which were contiguous, in the first half of the fourteenth century. Villahermosa was integrated into a trade circuit of grain, and then of wool, at the center of which Puertomingalvo was, organized from southern Aragón to the Valencian Mediterranean coast beyond all the boundaries of Kingdoms or seigniories.