Italiae, provinciarum (1560) and De Romanae jurisprudentiae judiciis (1574) De republica Atheniensium (1564) and De Atheniensium et Lacedaemoniorum temporibus (1565), the first well-arranged account of the constitution, history, and chronology of Athens and Sparta, with which may be mentioned a similar work on the religious, political, and military system of the Jews (De republica hebreorum). His history of the kingdom of Italy (De regno Italiae, 1580) from the invasion of the Lombards (568) to the end of the 13th century forms a companion volume to the history of the western empire (De occidentali imperio, 1579) from Diocletian to its destruction. In order to obtain material for these works, Sigonius consulted all the archives and family chronicles of Italy, and the public and private libraries, and the autograph manuscript of his De regno Italiae, containing all the preliminary studies and many documents not used in print, was discovered in the Ambrosian library of Milan. At the request of Pope Gregory XIII he undertook to write the history of the Christian Church, but did not live to complete the work. The most complete edition of his works is that by F. Argelati (Milan, 1732–1737), which contains his life by L.A. Muratori, a trustworthy authority for the biographer. References This work in turn cites: Girolamo Tiraboschi, Storia delta letteratura italiana, vii. Ginguené, Histoire littéraire d'Italie J.P. Krebs, Carl Sigonius (1840), including some Latin letters of Sigonius and a complete list of his works in chronological order Franciosi, Della vita e delle opere di Carlo Sigonio (Modena, 1872) Hessel, De regno Italiae libri XX. von Carlo Sigonio, eine quellenkritische Untersuchung (1900) J.E. Sandys, History of Classical Scholarship, ii. (1908), p. 143. External links 1520s births 1584 deaths Italian classical scholars Italian Renaissance humanists 16th-century Italian writers