Robert, titular Emperor of Constantinople

Robert di Tarento Principe di Tarento titular Emperor of Constantinople, Prince of Achaia, Duke of Athens, Count of Kefalonia and Zante, son of PHILIPPE Principe di Tarento [Anjou-Sicily] & his second wife Catherine de Valois titular Empress of Constantinople (early winter 1326-Naples 10 Sep 1364, bur Naples, San Giorgio Maggiore). He adopted the title Duke of Leucada in 1353 during his campaign to subjugate Greece.

-http://fmg.ac/Projects/MedLands/SICILY.htm#RobertTarentodied1364
7. ROBERT di Taranto (early winter 1326-Naples 10 Sep 1364, bur Naples, San Giorgio Maggiore). He succeeded his father in 1332 as titular Despot of Romania, Principe di Taranto, and suzerain of the principality of Achaia, with his mother as regent. His uncle Jean Conte di Gravina refused to swear allegiance to him for Achaia. The solution found was the cession of his rights to the principality of Achaia to his nephew 17 Dec 1332, with a loan of 5,000 ounces of gold arranged with the Florentine bank of the Acciaiuoli family, in return for Robert's rights to the kingdom of Albania and duchy of Durazzo[920]. The arrangement was confirmed by the Pope in Jan 1333 and by Robert King of Sicily 14 Mar 1338[921]. He sailed for Morea from Brindisi 15 Nov 1338 with his mother and brothers, returning to Italy in Jun 1341. He took personal control of the principality of Achaia, through a representative, on reaching the age of majority in [1341/42]. He seized power in Naples, allied with his cousin Charles Duke of Durazzo, after Jeanne Queen of Sicily rejected him as her second husband in favour of his younger brother Louis, and was named Captain General of the kingdom 26 Apr 1346,. He succeeded his mother in 1346 as suzerain of Achaia, Duke of Athens, Count of Kefalonia and Zante, and titular Emperor of Constantinople, but did not return to Morea[922]. Queen Jeanne removed him from power in Naples. He was arrested at Aversa and in 1348 taken to Hungary as a prisoner by Lajos King of Hungary, who had come to Naples to seek revenge for the murder of his brother. He remained a prisoner for four years, only returning to Naples in Mar 1352. He left for Greece and succeeded in taking control of Corfu, Kefalonia and Zante in 1353/54, and adopted the title Duke of Leukada, before returning once more to Naples. On his death he named his brother Philippe as his successor to his imperial rights.

m (Naples, San Giovanni Maggiore 9 Sep 1347) as her second husband, MARIE de Clermont, widow of GUY of Cyprus Prince of Galilee, daughter of LOUIS I de Clermont Duc de Bourbon & his wife Marie de Hainaut [Avesnes] (-Naples 1387, bur Naples Santa Chiara). Her husband transferred to her lands in Corfu, Kefalonia and the Achaian fief of Kalamata. She bought the baronies of Vostitza and Nivelet[923]. By 1364, she owned sixteen castles in Achaia and on her husband's death supported a claim by her son by her first marriage to succeed as Prince of Achaia, disputing the succession of her brother-in-law Philippe di Taranto[924]. After a lengthy civil war, a settlement was reached in 1370 under which she sold her rights to Achaia for 6,000 gulden and retained only the Lordship of Kalamata[925]. The testament of "domine Marie de Borbonio, imperatricis Constantinopolitane" names "quondam domini Hugonis de Lisiniano, filii sui, principis Galilee" and appoints "dominum Ludovicum ducem de Borbonio, comitem Claromontis et Foresii…nepotem suum" as her sole heir[926].