Orseolo was born in 928 near Udine to one of the more powerful families in Venice: the Orseolo were the descendants of Doge Teodato Ipato and Doge Orso Ipato. At the age of 20 he was named commander of the Venetian fleet, performing distinguished service as a soldier; he waged successful campaigns against the Dalmatianpirates. He was also devoted to the Catholic Church. He had one son named Pietro II Orseolo, who also became a Doge, and a daughter who married to Giovanni Morosini, a member of the House of Morosini.[3]
Reign
In 976, the sitting doge, Pietro IV Candiano, was killed in a revolution that protested his attempts to create a monarchy. According to a statement by the Camaldolese monk and cardinal, Peter Damian, Orseolo himself had led a conspiracy against Candiano. This statement, however, cannot be verified. Nonetheless, Orseolo was elected as his successor. His wife and consort was Felicia Malipiero.[4]
As doge, Orseolo demonstrated a good deal of talent in restoring order to an unsettled Venice and showed remarkable generosity in the treatment of his predecessor's widow. He built hospitals and cared for widows, orphans and pilgrims. Out of his own resources he began the reconstruction of the ducal chapel, now St. Mark's Basilica, and the Doge's Palace, which had been destroyed during the revolution, along with a great part of the city. Two years later, on 1 September 978, seemingly without notifying anyone, not even his wife and children, he left Venice with Abbot Guarin and three other Venetians (one of whom was St. Romuald) to join the Benedictine (now Cistercian) abbey at Saint-Michel-de-Cuxa (Catalan: Sant Miquel de Cuixà) in Prades (Catalan: Prada), southern France.
Here Orseolo led a life of great asceticism, performing the most menial tasks. There is some evidence that he had been considering such an action for some time. His only contact with Venice was to instruct his grandson Otto[5] (who would become doge in 1008) in the life of Christian virtue. After some years as a monk at the abbey, probably with the encouragement of Saint Romuald (who later went on to found the Camaldolese branch of the Benedictines), Orseolo left the monastery to become a hermit in the surrounding forest, a calling he followed for seven years until he died. His body is buried in the village church in Prades (Catalan: Prada), France.
In 1733 the Venetian librarian Giuseppe Bettinelli published an edition of a biography written by the Friar Fulgenzio Manfredi in 1606.[6]
Veneration
Forty years after his death, in 1027, Orseolo was officially recognized as a blessed by the local bishop.