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. 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 () in
Prades (), 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 (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 (), France. In 1733 the Venetian librarian Giuseppe Bettinelli published an edition of a biography written by the Friar
Fulgenzio Manfredi in 1606. ==Veneration==