Ciro Alidosi
16th-century Italian nobleman
About Ciro Alidosi
Lived 1520 – 1589 (aged 68–69).
Early life Ciro Alidosi was born around 1520 to Giulio Alidosi and Virginia Chigi. His mother was from Chigi family of Siena. His maternal grandmother was Sulpizia Petrucci, one of the daughters of the lord of Siena, Pandolfo Petrucci. His grandfather Beltrando was brother of Cardinal Francesco. Entrusted by his cousin and guardian, Cesare Alidosi, he was presented to Cosimo I who gave Ciro the title of chamberlain.
Tenure as lord of Castel del Rio In 1560, following the death of Cesare Alidosi, who left no male heirs, Ciro inherited the lordship of Castel del Rio and became head of Alidosi family. In addition to Castel del Rio, his domains included Massa, Fornione, Fossignano, Fontana, Gaggio near Bologna.
On March 30, 1562, Cosimo I knighted him as part of Order of Saint Stephen His reign saw completion of the Palazzo Alidosi, a construction project that had begun earlier in the century under the design of Bramante. However, his governance was marred by controversy. Ciro was known for imposing heavy taxes, territorial usurpations, and acts of violence against his subjects, even by the standards of his time. The resulting trial found Ciro guilty, and he was condemned in absentia. That same year, Ravaglia further accused Ciro of organizing a retaliatory attack against him. Once again, Ciro was convicted in absentia, but thanks to the protection of the Medici family, he faced no consequences for either conviction.
In 1570, Ciro accompanied Cosimo on his visit to Rome, where Pope Pius V bestowed upon Cosimo the title of Grand Duke of Tuscany.
After Cosimo's death in 1574, Ciro was sent to Genoa, Madrid, and Lisbon to inform those courts of the event. Ciro continued to serve under Cosimo's successor, Francesco I, who assigned him various diplomatic missions. In 1575, he attended the Diet of Regensburg, where he secured recognition of the Medici's grand ducal title from Emperor Maximilian II.
In 1577, he acted as the grand ducal representative in Spain and served as ambassador in Lisbon. Two years later, in 1579, he was sent on a diplomatic mission to Bavaria. In 1587, Ciro traveled to Vienna, Dresden, and Warsaw to announce the death of Francesco. He was appointed a gentleman of the chamber by Christina of Lorraine, wife of new Grand Duke Ferdinand I.
He died in 1589, passing the lordship to his son Roderigo.
Family Shortly before 1545, Ciro married Elena di Rodrigo de Mendoza, a lady-in-waiting to Eleonora de Toledo, the wife of Cosimo I. The couple had several children:
Giulio Cesare, member of Landsknecht guards of Cosimo I, married to Filippa Laura Bartolelli. Died in 1589. Roderigo Alidosi, lord of Castel del Rio Eleonora Alidosi – betrothed to Roberto d'Altemps, son of Mark Sittich von Hohenems Altemps on April 17, 1567. However, this commitment was already dissolved by the cardinal in 1572 with a letter sent to Alidosi on January 31. She was later married to Giovan Maria Pantaleoni with whom he had a son, Ciro Pantaleoni.
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Important facts
People in Ciro Alidosi's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Ciro Alidosi's
Frequently asked questions
Who was Ciro Alidosi?
16th-century Italian nobleman (1520-1589)
When was Ciro Alidosi born?
Ciro Alidosi was born in 1520.
When did Ciro Alidosi die?
Ciro Alidosi died in 1589.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Ciro Alidosi. https://biography.guide/ciro-alidosi/
MLA: "Ciro Alidosi." Biography.guide, https://biography.guide/ciro-alidosi/.
Chicago: "Ciro Alidosi." Biography.guide. https://biography.guide/ciro-alidosi/.
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