Ugolino della Gherardesca (c. 1220 - March 1289), count of Donoratico, was an Italian noble and naval commander, head of the powerful family of della Gherardesca, the chief Ghibelline house of Pisa. He is best known from Dante's fictional depiction of him in "Inferno". Alleged to have betrayed his native city of Pisa to its enemies in Genoa, he was betrayed by his co-conspirator Ruggieri degli Ubaldini, Archbishop of Pisa and imprisoned, … Wikipedia
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