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Pjetër Losha was an Albanian clan leader in medieval Epirus. He belonged to the Losha fis (clan or tribe) and was the leader of a combined force of his own clan and the fis of Mazaraki and Malakasi. In 1360, he became Despot of Arta, Rogoi and the area of Amphilochia. He died in 1374 and was succeeded by his close ally, Gjin Bua Shpata. The Chronicle of the Tocco is an important primary source for his life and the Albanians in medieval Epirus in general.