| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Alfonso IV, king of Aragón and count of Barcelona |
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| 12991336, king of Aragón and count of Barcelona (132736), son and successor of James II. Before his accession he conquered (132324) Sardinia, where later a revolt involved him in war with Genoa and Pisa. He was succeeded by his son, Peter IV. |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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