Italian organist, harpsichordist and composer. [...] He served as organist at S Luigi dei Francesi, Rome, from 1619 to 1623, and at the Chiesa Nuova from 1628 to at least 1653. For the remainder of his career he performed frequently at S Luigi, S Maria Maggiore, the Oratorio del Crocifisso, the Oratorio di S Marcello and other Roman establishments, along with leading virtuosos including Frescobaldi, Fabrizio Fontana, Cesti, Colista, Pasqualini and Vittori.
Source: Lewis Reece Baratz: Giovanni Battista Ferrini quoted from Grove Music Online accessed 29 January 2010
Complete article (requires subscription).