he name Morrone traces its origin to the antique word maronea whose etym means “rock”. Therefore, Morrone is appropriately named given that the town is built on a rocky spur. In ancient times other denominations were used such as: Murronis, Marone, and Murrone.

Many think the name Morrone comes from the word morra (an ear of grain) on the basis that the area surrounding Morrone is a big wheat producer. Such a hypothesis is lacking, however, any scientific foundations. In the past, Morrone has been confused by some historians with Morrone (then Castelmorrone), a town situated in the province of Caserta.

The Royal Decree of January 22, 1863, authorized the denominational change of Morrone to Morrone del Sannio.