The surname Verrengia is an Italian surname of Campanian origin, closely linked to the province of Caserta, in the region of Campania. It is a surname with a marked territorial rooting, whose historical presence is concentrated in the Aurunca area, in the north of the region.

The main localities associated with the surname are found among Cellole, Sessa Aurunca, Carinola, Casale di Carinola and Falciano del Massico. In particular, Cellole appears as one of the most relevant historical nuclei, where the surname records an especially high frequency.

Current estimates place between 300 and 500 Verrengia families in Italy, with a distribution strongly concentrated in Campania and a much more limited diffusion in other regions of the country. This pattern reinforces the idea of a local surname, tied to a specific territory and with little internal dispersion.

From the historical point of view, various local sources point to Verrengia as a significant surname within the Aurunca Territory, with families documented at least from the 18th century. There are references to lineages of a certain social prestige, to historical buildings associated with the surname and to heraldic symbols preserved in old residences of the area. Among the most cited figures is don Giuseppe Verrengia, known as Peppariello, author of a 1782 manuscript that constitutes a fundamental source for the religious tradition linked to the cult of the Madonna della Libera in the region.

As for its etymology, some alternative hypotheses —of a minority character— have been proposed suggesting a possible relation with surnames of medieval Austro-Germanic origin. However, these interpretations do not have academic consensus and do not modify the main fact: the surname Verrengia presents itself as fully developed and consolidated in Campania, where its historical continuity is documented.