The patron saint of Quarto is Santa Maria Libera Nos a Scandalis, whose name means «free us from snares», celebrated on 12 September. Every year the celebrations and the patronal feast last about a week, with religious and civic events; especially cherished is the procession of the statue of the Madonna through all the municipality's main streets.
The first records of the mother church date precisely from 23 August 1243, when the Puteolan bishop Peter consecrated it; the building most likely arose on the site of an older chapel, since a document from 1013 already refers to the sale of land in a place called «ad Sanctam Mariam qui dicitur ad Scandola». A local legend, once depicted in a fresco on the church's inner wall, ties the building's founding to a king and queen of Naples who, having escaped a boar's attack during a hunt in that area, are said to have wanted it built in fulfilment of a vow: the tradition, though without certain historical confirmation, finds some grounding in Emperor Frederick II's passion for falconry, he having had the nearby Castello di Monteleone built in the same period.
