The Cybo, Cibo or Cibei family of Italy is an aristocratic family from Genoa of Greek origin. They came to the city in the 12th century. In 1528 the Cybos formed the 17th "Albergo", a union of noble families of Genoa. The family split in many branches, some living in Genoa, other in Naples by the name of Tomacelli. Its most famous members were Pope Boniface IX. and Pope Innocent VIII.
The Cybo married with the most famous Italian families including Medici of Tuscany, Della Rovere of Urbino and Este of Modena and had blood relationship with the banking family Altoviti. Innocent VIII was the uncle of La Papessa Dianora Cybo Altoviti. Her son Bindo Altoviti was one of the most influential bankers and patron of the arts of the Renaissance as well as a close ally of his cousin cardinal Innocenzo Cybo.
Innocent VIII illegitimate son was Franceschetto Cybo, son in law to Lorenzo Il Magnifico de' Medici and brother-in-law to Pope Leo X. He was given by his father the title of Count of the Lateran Palace. Later Pope Julius II award him with the title Duke of Spoleto. His son Lorenzo Cybo, married Ricciarda Malaspina d'Este and became marquis of Massa and Carrara, founding the Cybo-Malaspina branch, later elevated to the dukes of Massa and Carrara.
Notable members from the 15th century to the 19th century include:
- Lanfranco Cybo, consul of Genoa 1241; one of the first known members
- Guglielmo il Buono Cybo, palatine count of Holy Roman Empire 1260, admiral of the Genoan fleet
- Pope Boniface IX. (Pietro Tomacelli Cybo ) (1350 - 1404)
- Leonardo Cybo, Italian cardinal
- Angelo Cybo, Italian cardinal
- Arano Cybo (1377 - 1457) Viceroy of Naples and Count of Gragnano
- Pope Innocent VIII (Giovanni Battista Cybo) (1432–1492)
- Franceschetto Cybo (1450 – 1519) duke of Spoleto, illegitimate son of Pope Innocent VIII, brother-in-law to Pope Leo X
- Lorenzo Cybo Malaspina (1500 - 1549) was an Italian general, duke of Ferentillo.
- Lorenzo Cybo de Mari (died 1503), Italian cardinal
- Innocenzo Cybo (1491-1550), Italian cardinal
- Gherardo Cybo (1512–1600), colonel of the papal army, a famous naturalist.
- Giulio Cybo (1525 - 1548) Marquis of Massa, cousin of Cosimo I de' Medici, executed 1548 for conspiring against Andrea Doria
- Alberico I Cybo-Malaspina (1554-1623)
- Alderano Cybo (1613–1700), Italian cardinal
- Carlo I Cybo-Malaspina (1623-1662)
- Alderano I Cybo-Malaspina, Duke of Massa, Prince of Carrara (1690–1731)
- Maria Teresa Cybo-Malaspina, (1725-1790), daughter of Alderano I, princess of Carrara, wife of Ercole III d'Este, Duke of Modena and mother of Maria Beatrice d'Este, Duchess of Massa-Carrara, who married Archduke Ferdinand of Austria. Massa was united with Modena upon Maria Beatrice's death in 1829
- Smith, Philip (2009). The History of the Christian Church. General Books LLC. pp. 219–220. ISBN 978-1-150-72245-5.
CHARACTER OF INNOCENT VIII… Cardinal John Baptist Cibo, who was elected as Innocent VIII. (1484–1492)…His family was of Greek origin, but had been long settled at Genoa and Naples by the name of Tomacelli that to which Boniface IX. belonged. The name of Cibo was taken from the chess-board pattern (itii/30s) in their arms. The father of Innocent had been Viceroy of Naples under King Rene, and Senator of Rome under Calixtus III.
- Thomas, Joseph (2010). The Universal Dictionary of Biography and Mythology. Cosimo, Inc. p. 704. ISBN 978-1-61640-071-2.
Cybo or Cibo, che-bo', (Arano or Aaron,) the ancestor of a noble Genoese family, was born of Greek origin at Rhodes
- The Grimaldis of Monaco, Anne Edwards, HarperCollins, 1992, , ISBN 978-0-00-215195-5
- Genoa and the sea : policy and power in an early modern maritime republic, 1559–1684, Thomas Allison Kirk, Johns Hopkins University Press, 2005, pg. 25 , ISBN 978-0-8018-8083-4