As a bookseller and apprentice printer he established a network of Italian connections that helped him act as a go between and publisher of Italian reformed thinkers and writers, such as Vermigli, Pier Paolo Vergerio, Jacopo Aconcio, Bernardino Ochino, Lelio Sozzini, Sebastian Castellio, Celio Secondo Curione, etc.
Pietro Mascagni | Pietro Bembo | Pietro da Cortona | Ponte San Pietro | The Battle of San Pietro | Pietro Tacca | Pietro Perugino | Pietro Canonica | Pietro Annigoni | San Pietro in Casale | Pietro Tenerani | Pietro Tagliavia | Pietro Frua | Pietro Consagra | San Pietro in Ciel d'Oro | Pietro Verri | Pietro Scalia | Pietro Lombardi | Pietro Gori | Pietro Delitala | Pietro de' Crescenzi | Pietro Badoglio | Pietro Paolo Cristofari | Pietro Nobile | Pietro Musumeci | Pietro IV Candiano | Pietro Garinei | Pietro Della Valle | Pietro Cascella | Pietro Aretino |