Much wrangling between the French and Spanish parties, the duchy was confirmed in 1586 to Ottaviano Farnese and his son Alessandro, better known as Philip II.s general, the prince of Parma.
Agostino also contains some good frescoes by Ottaviano Nelli of Gubbio.
In the 14th and 15th centuries a branch of the Umbrian school of painting flourished here, the most famous masters of which were Guido Palmerucci (1280-1345?) and several members of the Nelli family, particularly Ottaviano (d.
(Berlin, 1875) and "Registri dei Cardinali Ugolino d'Ostia et Ottaviano degli Ubaldini," ed.
The belfry, which rises above the right-hand doorway, was erected about 1520 by the doge, Ottaviano da Campofragoso, and the cupola was erected after the designs of the architect Galeazzo Alessi in 1567.
Facade is the Palazzo del Governo, erected in 1350, which has a chapel with frescoes by Ottaviano Nelli of Gubbio (1424).