The first recorded baptism is dated January 12, 1770, and belongs to the child Manuel Benito Casa de Baie, son of Mariano Casa de Baie, born in Catalonia, and Ana Durán, born in Buenos Aires.

[2] The parish of Montserrat was mostly attended by faithful of humble origin, although weddings and baptisms of the patrician families of Buenos Aires were also held, including the wedding of Joseph Gregorio Belgrano with Casiana Cabral, members of the most distinguished families of the city.

[5] Another distinguished priest was Manuel Velarde, who served in the parish of Montserrat from 1857 to 1870.

The original facade was the work of the Italian architect Antonio Masella.

[6] The current view of the temple was commissioned to the architects Pablo Scolpini and Manuel Raffo, having its inauguration on September 10, 1865.