 Complete the following phrase:  Paolos lone Occitan work is a sonnet of no artistic worth but some historical interest. It is confidently dated to 1284 and is conserved only in troubadour manuscript P, an Italian chansonnier of 1310, now XLI.42 in the Biblioteca Laurenziana in Florence. It begins Valenz Senher, rei dels Aragones and is addressed to Peter III of Aragon. Paolo probably left no other Occitan works, but his poem is historically interesting for its information on north Italian perspectives concerning the War of the Sicilian Vespers, the conflict between the Angevins and Aragonese for Sicily. Peter III and the Aragonese cause was popular in northern Italy at the time and Paolos sonnet is a celebration of his victory over the Angevins and Capetians in the 