John I, king of Aragón and count of Barcelona

John I, 1350–95, king of Aragón and count of Barcelona (1387–95), son and successor of Peter IV. During his reign Aragón lost (1388) the duchy of Athens. An enthusiastic patron of learning and an imitator of French customs, he held one of the most brilliant courts of the time. He was succeeded by his brother, Martin I.

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