CYBO, a Genoese family, said to be of Greek extraction, several individuals of which distinguished themselves in the military service of their country during the middle ages. Pops Innocent VIII., who was elected in 1485, was of this family ; and his grandson, Lorenzo Cybo, married, about 1520, Ricciardi Malaspina, heiress of the princely fiefs of Massa and Carrara. His son, Alberico Cybo Malaspina, after the death of his parents, became lord of Massa and marquis of Carrara in 1553, and his titles were confirmed by a diploma of the Emperor alaximiliau, dated August 1568. Alberico is still remembered both at Massa and at Carrara as a wise and beneficent prince. He died at a very advanced age in 1623, and was succeeded by his grandson Charles, who, dying in 1662, was succeeded by his son Alberico 1I. Aberico obtained of the emperor Leopold I. the title of principality for his marquisate of Carrara, and he and his successors were thenceforth styled dukes of Massa and princes of Carrara. Alberico II. died in 1690, and was succeeded by his son Charles II. Alberico III., Charles's son, succeeded his father in 1710, and received the investiture of Masan and Carrara by a diploma of the Emperor Charles VI. Alberico died childless in 1715, and was succeeded by his younger brother Alderano, who died in 1731, leaving three datanaters, the eldest of whom, named Maria Theresa, married Ercole Rinaldo of Este, prince of Modena, in 1711, having obtained for herself from the emperor Francis I. the investiture of her maternal inheritance. Maria Theresa
died in 1790, before her husband, and was succeeded in her dominions of Massa and Carrara. by her only child, Maria Beatrice, who remained after the death of her father the heiress of the two houses of Este and Cybo Malaspina. She had married, in 1771, the Archduke Ferdi nand of Austria, by whom she had the late duke Francis IV. of Modena and other children. Maria Beatrice continued to administer her principalities of Massa and Carrara till the French revolutionary invasion. 1Bacioccor.) The treaty of Vienna of 1815 restored Maria Beatrice to her dominions of Massa and Carrara. Maria Beatrice died in 1829, and her dominions reverted to her son, Francis IV. of Modena, who assumed the title of Duke of Massa and Carrara, and who was succeeded in January 1846 by his son, Francis V., the present duke. (tepetti, Dizionario Geografico Storico della Toscana, art. Massa;' Viani, Memorie Stork/Le della Fam.iglia Cybd.)