Antonio II Acciaioli was the Duke of Athens from 1439 to 1445.

He was a son of Francesco and Margareta Malpigli and grew up in Florence

Florence

Florence is the capital city of the Italian region of Tuscany and of the province of Florence. It is the most populous city in Tuscany, with approximately 370,000 inhabitants, expanding to over 1.5 million in the metropolitan area....

 until 1413, when his uncle Antonio I

Antonio I Acciaioli

Antonio I Acciaioli , called the Bastard, was the illegitimate son of Nerio I of Athens and his longtime mistress Maria Rendi. He became Duke of Athens on the death of his father , but was expelled within the year by the Republic of Venice, the executor of Nerio's will...

 called he and his brother Nerio II

Nerio II Acciaioli

Nerio II Acciaioli was the Duke of Athens on two separate occasions from 1435 to 1439 and again from 1441 to 1451. He was a member of the Acciaioli family of Florence, the son of Francesco Acciaioli, Lord of Sykaminon. His rule was contemporaneous with a renewed Italian philhellenism and...

 to Greece to live at his court. When the elder Antonio died in January 1435, he left the duchy to Nerio under the regency of his widow Maria Melissene. However, Antonio forced Nerio from the city in January 1439. Antonio ruled energetically but briefly and died in 1445, to be replaced by his deposed brother.