The name Caccavone is first mentioned in the 8th century when it was given to Count Randoisio. In 1070 among the crusaders to the Holy Land there is a Raul de Petra, lord of Caccavone. Then under the Angevin rule the fiefdom was given to Carlo I Caracciolo Carrafa, and his descendants kept it until 1515, when it was sold to Salvitto di Carfagna from Capracotta, who in his turn sold it again to Alfonso de Raho, the noblest of the lords of Caccavone. His family kept the fiefdom until 1633, when they sold it to Baron Santo de Santis. The last lords where the Petra family, until 1806 when Gioacchino Murat, king of Naples, abolished the feudal rights.
A son of emigrants from Poggio Sannita is Nino Ricci, one of the main Italian Canadian writers of our times, author of novel "Lives of the Saints" (1990), the first volume of a trilogy continued in "In a Glass House" (1993), and "Where she has gone" (1997), telling the story of a young boy, Vittorio Innocente, an emigrant to Canada, his painful integration process and his final return to Molise.