The Duchy of Athens was one of the Crusader states set up in Greece after the conquest of the Byzantine Empire during the Fourth Crusade as part of the process known as Frankokratia, encompassing the regions of Attica and Boeotia, and surviving until its conquest by the Ottoman Empire in the 15th century.
During the late Middle Ages, the two cities of Argos and Nauplia formed a lordship within the Frankish-ruled Morea in southern Greece.
The Acciaioli, Acciaiuoli, Accioly, Acciajuoli or Acioli was an important family of Florence.
Carlo I Tocco was the hereditary Count palatine of Cephalonia and Zakynthos from 1376, and ruled as the Despot of Epirus from 1411 until his death on July 4, 1429.
The Duchy of Neopatras was a principality in southern Thessaly, established in 1319. Officially part of the Kingdom of Sicily, itself part of the Crown of Aragon, the duchy was governed in conjunction with the neighbouring Duchy of Athens, it enjoyed a large degree of self-government. From the mid-14th century, the duchies entered a period of decline: most of the Thessalian possessions were lost to the Serbian Empire, internal dissensions arose, along with the menace of Turkish piracy in the Aegean and the onset of Ottoman expansion in the Balkans. Enfeebled, the Catalan possessions were taken over by the Florentine adventurer Nerio I Acciaioli in 1385–1390. The title of Duke of Neopatras was held by the heir of the King of Sicily.
Nerio I Acciaioli or Acciajuoli was the actual ruler of the Duchy of Athens from 1385. Born to a family of Florentine bankers, he became the principal agent of his influential kinsman, Niccolò Acciaioli, in Frankish Greece in 1360. He purchased large domains in the Principality of Achaea and administered them independently of the absent princes. He hired mercenaries and conquered Megara, a strategically important fortress in the Duchy of Athens, in 1374 or 1375. His troops again invaded the duchy in 1385. The Catalans who remained loyal to King Peter IV of Aragon could only keep the Acropolis of Athens, but they were also forced into surrender in 1388.
Nerio II Acciaioli (1416–1451) was the Duke of Athens on two separate occasions from 1435 to 1439 and again from 1441 to 1451.
Chiara Zorzi or Giorgio, also Clara or Claire, was duchess consort of Athens by marriage to Nerio II Acciaioli, Duke of Athens, and regent of Athens during the minority of her son Francesco I from 1451 until 1454.
Antonio I Acciaioli, also known as Anthony I Acciaioli or Antonio I Acciajuoli, was Duke of Athens from 1403.
Francis or Francesco I Acciaioli was the son of Nerio II Acciaioli by his second wife Chiara Zorzi. He succeeded on his father's death in 1451 to the Duchy of Athens under his mother's regency.
Amadeus or Amedeo of Savoy was the son of James of Piedmont and his third wife Marguerite de Beaujeu. By James' will of 16 May 1366, he was declared his firstborn and heir. In 1367, he succeeded his father in his titles of Lord of Piedmont and Prince of Achaea. He was also the lord of Pinerolo.
Louis Fadrique a Catalan nobleman who was Count of Salona, as well as lord of various other towns in Central Greece from ca. 1365 until his death in 1382. In 1375–1381 he also served as the vicar-general of the twin duchy of Athens and Neopatras.
Angelo Acciaioli was an Italian Roman Catholic bishop from Florence.
Jacopo Gaddi was an Italian Neo-Latin and Italian writer from Florence.
Pietro Zeno, was lord of Andros from 1384 until his death in 1427, and a distinguished diplomat in the service of the Republic of Venice.
Niccolò Acciaioli or Acciaiuoli was an Italian noble, a member of the Florentine banking family of the Acciaioli. He was the grand seneschal of the Kingdom of Naples and count of Melfi, Malta, and Gozo in the mid-fourteenth century. He was the son of Acciaiolo, a wealthy Florentine merchant. He had a sister by the name of Andrea Acciaioli.
Helena Asanina Kantakouzene was regent of the Lordship of Salona in Frankish Greece from 1382 until its conquest by the Ottoman Empire in 1394 on behalf of her daughter Maria Fadrique.
Dorotheus I was the Greek Orthodox metropolitan bishop of Athens from c. 1388 to 1392, and the first to reside in the city since 1205.
Bartolomea Acciaioli or Acciajuoli was the wife of Theodore I Palaiologos, Despot of the Morea from 1385. She was the elder daughter of Nerio I Acciaioli, who held large estates in Frankish Greece. She was famed for her beauty and her father gave her in marriage to the Despot to seal their alliance. Since her father and husband's relations deteriorated in the early 1390s, her father disinherited her in favor of her younger sister, Francesca, and their illegitimate brother, Antonio. Barolomea died childless.
Francesca Acciaioli or Acciajuoli was the wife of Carlo I Tocco, Count Palatine of Cephalonia and Zakynthos.
