The Brotherhood of the Clerics, in addition to the main patroness which is Our Lady of the Assumption, has two co-patron saints, St. Peter and St. Philip Neri, regarding the merger of the three brotherhoods.
Our Lady of the Assumption
Our Lady of the Assumption is an invocation of the Virgin Mary and an allusion to her ascension.
The choice of this patroness was peculiar, since each one of the three brotherhoods had an oracle of election - Our Lady of Perpetual Help, Our Lady of the Necessities and Our Lady of the Assumption - and since the election was not consensual, this was by scrutiny, that is, the name of the three invocations of the Virgin was placed in an urn and the name of Our Lady of the Assumption was drawn as the patroness of the Clerics.
St. Peter Ad Vincula (St. Peter in Chains)
The devotion for St. Peter ad Vincula or St. Peter "in chains" originated in the Basilica of San Pietro in Vincoli in Rome, as the chains, which are supposed to have been the ones that chained Peter, are located - an apostle and disciple of Jesus Christ - when he was imprisoned in Jerusalem.
St. Philip Néri
Saint Philip Néri, known as the Saint of Joy, revealed from a very young age a very kind character and Christian vocation. He founded the Congregation of the Oratory in Rome in 1565, aimed at the Christian education of the youth and the people, and the aid to the neediest.