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Cangrande ( christened Can Francesco ) della Scala ( 9 March 1291 – 22 July 1329 ) was an Italian nobleman , the most celebrated of the della Scala family which ruled Verona from 1277 until 1387 .
 Cangrande, della Scala, della Scala, Verona
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
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 Cangrande, della Scala, della Scala, Verona