Compagnoni, Pietro an Italian ecclesiastic, was born at San Lorenzo, near Lugo, March 28, 1802. He received his education first under his uncle; afterwards studied belles-lettres, philosophy, and theology under the famous professor Tommaso Ancarini, who died at Rome in 1830, vicar-general of the Dominicans. Compagnoni, at the age of eighteen, aided by Giovanni Nuvoli, published Salmri Penitenziali Davide (Lugo, 1821). After ordination he was made professor of rhetoric and geography in the Lyceum at Lugo, at the same time officiating as preacher. He died Sept. 13, 1833, leaving some minor pieces, for which see Biog. Universelle, s.v.