As a writer, he was one of the first to restore the Latin tongue to its pristine purity; and among his works are De Vera Philosophia ex quatuor doctoribus ecclesiae (Bologna, 1507), De Sermone Latino (Basel, 1513), and a poem, De Venatione (Venice, 1534).
In 1279 Pope Nicholas sent his nephew, the friar preacher Latino Frangipani Malabranca, whom he had created cardinal bishop of Ostia the same year, to reconcile the parties in Florence once more.
Rebello da Silva and the voluminous and brilliant publicists, Latino Coelho and Pinheiro Chagas, wrote at second hand and rank higher as stylists than as historians.
Cardinal Latino to some extent succeeded, and was granted a kind of temporary dictatorship. He raised the 12 buoni uomini to 14 (8 Guelphs and 6 Ghibellines), to be changed every two months; and they were assisted by a council of loo.