Vicovaro (Latin: Varia,[4] Romanesco: Vicuaru) is a comune (municipality) in the Metropolitan City of Rome in the Italian region Lazio, located about 45 kilometres (28 mi) northeast of Rome.

In 1533, Ludovico Gonzaga seized Vicovaro in a conflict between the Orsini and the Medici pope Clement VII.

In 1692, Orsini properties were auctioned off to satisfy debts, and Vicovaro fell to Count Paulo Bolognetti.

The Bolognettis refurbished and expanded the Orsini castle and initiated other building projects in the city.

Theodoli oversaw the restoration of the Church of San Pietro for his nephew, Giacomo Bolognetti.