The S. Monica's Main Confraternity is one of the oldest lay congregation existing in Sorrento.  Unfortunately there is a lack of documents that could certify the exact institution date of the pious sodality. On this matter there are two more credited hypothesis, as said by Monsignor Ruggiero in a document written fallowing one pf his pastoral visit: the foundation year could be the 1227, year when the Pope Gregorio IX approved and favoured the institution of congregation under the title of the Virgin of the Belt; or the 1439, when Eugenio IV authorized the Agostinian order to erect such congregations.

The Main Confraternity of S. Monica, congregation of clear Agostinian inspiration, could have been founded therefore more probably in 1439.
This is the most accredited hypothesis by local historians and this would be confirmed by the fact that the church of the Annunziata was given together with the annex convent, to the care of the Agostinian monks, coming from the Monastery of S. Giovanni a Carbonara in Naples, only in XIV century.

With a decree of Papa Leone XIII, on 8th June 1886, the Confraternity was aroused to the grade of Main Confraternity with the right to aggregate to itself other solidities.
To say the truth that of S. Monica was already a Main Confraternity from 1582 fallowing its aggregation to the congregation of  S.Giacomo, S.Agostino and S. Monica already present in Bologna.

The Church and the Convent of the Annunziata were properties of the Agostinian friars, while the congregation had the chance of celebrating inside its own building. IN 1809 Giocchino Murat issued the so called "Destroyed Laws" that suppressed all the existing monastic orders in the Reign of Naples. Thus, the Church and the Convent became the Commune's property.

The convent became first Gendarmes' barracks and later an hospital. Meanwhile in 1864 the Church was given as property of the Confraternity of S. Monica up to the present time.

In 2001 the Church of the Annunziata was restored and embellished to their old splendour. The activities of the congregation were numerous, especially during the past centuries, it used to carry out an important charitable activity.

Under such context we count activity such as the so called "maritaggi" (weddings), consisting in small capitals whose incomes were used to help the young and needy Sorrentinian women who wanted to marry.

And moreover the Confraternity was involved in the pitiful activity of giving a Christian burial to the poor of Sorrento.