Gregório de Matos

Gregório de Matos e Guerra (December 23, 1636 – November 26, 1696) was a famous Portuguese Baroque poet from Colonial Brazil. Although he wrote many lyrical and religious poems, he was better known for his satirical ones, most of them criticizing the Catholic Church, earning him the nickname "Boca do Inferno" (Hell's Mouth).

He is the patron of the 16th chair of the Brazilian Academy of Letters. Provided by Wikipedia