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Ottaviano Riario

1479 – 1523

Italian noble

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About Ottaviano Riario

Lived 1479 – 1523 (aged 44). Ottaviano Riario was an Italian condottiero, catholic priest and catholic bishop.

Ottaviano Riario (born September 1479 – 1523 ) was an Italian condottiero and Lord of Imola and Forlì. Despite his nominal leadership, the real power lay with his mother Caterina Sforza.

Early life He was the oldest son of Girolamo Riario, a nephew of Pope Sixtus IV who had obtained possessions in Italy thanks to the pontiff's patronage, and Caterina Sforza. After his father's murder, he was created lord of Imola and Forlì in July 1488 by Pope Innocent VIII, under the regency of his mother.

Despite his official status, the nine-year-old Ottaviano was, in reality, controlled by his mother and her lover Giacomo Feo. When Feo humiliated Ottaviano in public by slapping him, his nominal courtiers did nothing to support him. After this episode, the situation in Forlì became very strained. Ottaviano's friends plotted to use the episode as motivation in ridding the city from the rule of Giacomo Feo by assassinating him. The fifteen-year-old Ottaviano was not involved.

Later lordship Feo's death did not diminish the power of Ottaviano's mother, who continued to make decisions on his behalf. Ottaviano was employed twice by the Florentines as a condottiero to defend Florentine interests. He was offered 15,000 florins in 1497 and 10,000 in 1499. Niccolò Machiavelli undertook negotiations on the second occasion. Ottaviano was still only the nominal leader, as the actual negotiations were conducted with Caterina.

However, Ottaviano personally commanded small forces in these local wars. In 1498 he took part in the siege of Pisa with 100 men-at-arms and 100 light horse. In 1499 he aided Ludovico Sforza, who was at war with the French and Venetians. At this point the Borgias decided to intervene. Pope Alexander VI sent his son Cesare Borgia to capture Imola and Forlì, claiming that dues had not been paid. Caterina and Ottaviano were deposed in January 1500.

After Alexander's death Ottaviano made several attempts to recapture his territories, but was unable to muster sufficient forces to achieve his goal.

Ancestry

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Important facts

Birth century
Occupation
Condottiero, Catholic priest, Catholic bishop
Nationality
Positions held
Diocesan bishop
Also known as
Ottaviano Visconti-Riario

Family & relationships

Parent
Caterina Sforza
Parent
Girolamo Riario

People in Ottaviano Riario's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Ottaviano Riario's

Frequently asked questions

Who was Ottaviano Riario?

Italian noble

When was Ottaviano Riario born?

Ottaviano Riario was born on 1 September 1479 in Forlì.

When did Ottaviano Riario die?

Ottaviano Riario died on 6 October 1523 in Italy.

What was Ottaviano Riario's occupation?

Ottaviano Riario was a condottiero, catholic priest and catholic bishop.

What nationality was Ottaviano Riario?

Ottaviano Riario was Italian.

Sources & further reading

· Wikipedia: Ottaviano Riario

· Wikidata: Q3357728

· DBpedia: Ottaviano Riario

Cite this page

APA: Biography.guide. (2026). Ottaviano Riario. https://biography.guide/ottaviano-riario/

MLA: "Ottaviano Riario." Biography.guide, https://biography.guide/ottaviano-riario/.

Chicago: "Ottaviano Riario." Biography.guide. https://biography.guide/ottaviano-riario/.

Data last updated: 2026-09-22 · Spot an error? Report a correction.

Portrait: Wikimedia Commons · author & licence

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