Camaldolese

The Camaldolese (Latin: Ordo Camaldulensium) monks and nuns are part of the Benedictine family of monastic communities which follow the way of life outlined in the Rule of St. Benedict, written in the 6th century. Their name is derived from the Holy Hermitage (Italian: Sacro Eremo) of Camaldoli, high in the mountains of central Italy, near the city of Arezzo. They use the post-nominal initials O. Camald.

The Camaldolese were established through the efforts of the Italian monk Saint Romuald (c. 950 – c. 1025/27). His reform sought to renew and integrate the eremetical tradition of monastic life with that of the cenobium.

In his youth Romuald became acquainted with the three major schools of western monastic tradition. The monastery where he entered the Order, Sant' Apollinare in Classe was a traditional Benedictine community under the influence of the Cluniac reforms. Romuald chose to be under a spiritual master, Marinus, who followed a much harsher ascetic and solitary lifestyle that was originally of Irish eremitical origins. Some years later, Marinus and Romuald settled near the Abbey of Sant Miguel de Cuxa, where Abbot Guarinus was also beginning reforms but was building mainly upon the Iberian Christian tradition. Later drawing on his various early experiences, Romuald was able to establish his own monastic pattern, though he himself never thought of it as a separate unit, seeing it as a full part of the Benedictine tradition.

...
Wikipedia