[1] Father Casaretto (1810–1878) from the age of seventeen was a monk of the Abbey of Santa Maria del Monte which was a member of the ancient Cassinese Congregation of Benedictine monasteries.
Due to his poor health later, after his ordination as a priest, he was advised to seek exclaustration (a temporary leave of absence for discernment).
Instead, he accepted assignment to a parish which had been entrusted to the pastoral care of the Congregation, but only on condition of being accompanied by a few of his brother monks.
That same year, it also found support from the Vatican with its approval of 18 articles Casaretto had submitted to serve as shaping the character of the foundation.
For this he convened an extraordinary Diet, which declared such a break, and established the monasteries of the Province as the Cassinese Congregation of the Primitive Observance.
This step drew the criticism of excessive centralization of monastic life, but the new congregation thrived, and received final papal approval in 1872, only five years after its inauguration.
As such, its houses tend to be focused more on an enclosed contemplative life rather than pastoral involvement with the larger community through the operations of schools or parishes.
The residence of the Abbot President of the congregation is at the Abbey of St. Ambrose (Italian: Sant'Ambrogio della Massima) in Rome.
The congregation is currently made up of: As to membership, the most recent Catalogus Monasteriorum published by the Benedictine Confederation (2015) notes the following (the figures cited do not include novices, oblates, or temporary professed): [5]