Paulus Perusinus or Pusinus was an Italian mytographer of the 14th century. He is extensively quoted in Giovanni Boccaccio

Giovanni Boccaccio

Giovanni Boccaccio was an Italian author and poet, a friend, student, and correspondent of Petrarch, an important Renaissance humanist and the author of a number of notable works including the Decameron, On Famous Women, and his poetry in the Italian vernacular...

's Genealogia Deorum Gentilium

Genealogia Deorum Gentilium

Genealogia deorum gentilium, known in English as On the Genealogy of the Gods of the Gentiles, is a mythography or encyclopedic compilation of the tangled family relationships of the classical pantheons of Ancient Greece and Rome, written in Latin prose from 1360 onwards by the Italian author and...

 (XVI, 6), but otherwise almost unknown. He was Head Librarian at the service of King Robert of Sicily

Robert of Naples

Robert of Anjou , known as Robert the Wise was King of Naples, titular King of Jerusalem and Count of Provence and Forcalquier from 1309 to 1343, the central figure of Italian politics of his time. He was the third but eldest surviving son of King Charles II of Naples the Lame and Maria of Hungary...

 and Jerusalem (Robert the Wise), a thorough investigator on foreign books and a close friend of Barlaam of Seminara, Boccaccio's own master. He attributes Paul an extensive treatise entitled Collections which was lost after his death. Boccaccio praises Paul's work, particularly when he quotes a certain Theodontius

Theodontius

Theodontius was the author of a now lost Latin work on mythology. He was extensively quoted in Giovanni Boccaccio's Genealogia Deorum Gentilium, but is otherwise almost unknown. Boccaccio says that he knew Theodontius's work through the Collections of Paul of Perugia, which Paul's wife burnt after...

.