Hungary, marched his army into Italy, and took Naples (1348). Joanna         
fled to Avignon, and sold that city to the papacy for 80,000 florins         
($2,000,000?); Clement declared her innocent, sanctioned her marriage,       
and ordered the invader back to Hungary. King Louis ignored the order,       
but the Black Death (1348) so withered his army that he was                  
compelled to withdraw. Joanna regained her throne (1352), and ruled in       
splendor and vice until deposed by Pope Urban VI (1380); a year              
later she was captured by Charles, Duke of Durazzo, and in 1382 she          
was put to death.                                                            
    Petrarch touched this bloody romance only at its source, in the            
first year of Joanna's reign. He soon resumed his wandering, staying                 
for a while at Parma, then at Bologna, then (1345) at Verona. There,         
in a church library, he found a manuscript of Cicero's lost letters to       
Atticus, Brutus, and Quintus. In Liege he had already (1333)                 
disentombed Cicero's speech  Pro Archia - a paean to poetry. These           
were among the most fruitful explorations in the Renaissance discovery       
of antiquity.                                                                
  Verona, in Petrarch's time, might have been classed among the              
major powers of Italy. Proud of her antiquity and her Roman theater          
(where one may still, of a summer evening, hear opera under the              
stars), enriched by the trade that came over the Alps and down the           
Adige, Verona rose under the Scala family to a height where she              
threatened the commercial supremacy of Venice. After the death of            
the terrible Ezzelino (1260) the commune chose Mastino della Scala           
as podesta; Mastino was assassinated in due course (1277), but his           
brother and successor Alberto firmly established the rule of the             
Scaligeri ("ladder bearers," from the apt emblem of a climbing               
family), and inaugurated the heyday of Verona's history. During his                   
reign the Dominicans began to build the lovely church of Sant'               
Anastasia; an obscure copyist unearthed the lost poems of Catullus,                   
Verona's most famous son; and the Guelf family of the Capelletti             
fought the Ghibelline family of the Montechi, never dreaming that they       
would become Shakespeare's Capulets and Montagues. The strongest and         
not the least noble of the Scala "despots" was Can Grande della Scala,       
who made his court an asylum for exiled Ghibellines and a haven for                   
poets and scholars; there Dante for several years indignantly                
climbed the shaky stairs of patronage. But Can Grande brought Vicenza,