Born: September 15, 1817, Florence, Italy.
Died: May 4, 1874, Florence, Italy.
Buried: Cimitero degli Inglesi, Florence, Italy.
During his studies, Ferretti met Swiss Protestants living in Florence. After a long inner struggle, he left Italy with his young wife, Marie Bruschi.
He spent a year in Geneva, and in 1842, moved to London, where he edited the journal L’Eco di Savaronarola.
In 1862, he returned to Florence, where he established a Protestant orphanage.