 In the 15th century Pietraroja was handed over to the Marzanos family and later to Onorato Gaetani.Subsequently, the town was held by the Carafa, whose possessions were also extended in Molise; they held it until the abolition of feudalism in 1806.Pietraroja has been a centre of the Bourbon reaction after the annexation of the Kingdom of the Two Sicilies to that of Italy in 1861.