Abu Al-Hasan ‘Ali ibn ‘Othman (c. 1297 – May 24 1351) (Arabic: أبو الحسن علي بن عثمان) was a sultan of the Marinid dynasty who reigned in what is now Morocco between 1331 and 1348. In 1333 he captured Gibraltar from the Castilians although a later attempt to take Tarifa in 1339 ended in fiasco. In North Africa he extended his rule over Tlemcen and Ifriqiya which together covered the north of what is now Algeria and Tunisia.
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