FERDINAND IV., El Emplazado or "the Summoned," king of Castile (d. 1312), son of Sancho IV., El Bravo, and his wife Maria de Molina, succeeded to the throne when a boy of six. His minority was a time of anarchy. He owed his escape from the violence of competitors and nobles, partly to the tact and courage of his mother, and partly to the citizens of Avila, who gave him refuge within their walls. He died suddenly in his tent at Jaen when preparing for a raid into the Moorish territory of Granada, on Sept. 7, 1312. His only son succeeded him as Alphonso XI.