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William II
prince of Sicily
Coat of arms of Aragonese Sicily
Duke of Athens & Neopatria
Reign	1317–1338
Predecessor	Manfred, Duke of Athens
Successor	John, Duke of Randazzo
Born	1312
Died	22 August 1338 Trapani
Buried	Dominican church of Trapani
Noble family	of Barcelona
Spouse(s)	María Álvarez de Jérica
Father	Frederick II of Sicily
Mother	Eleanor of Anjou

William II (1312 – 22 August 1338) was the third son of Frederick III of Sicily and Eleanor of Anjou. He inherited the Duchy of Athens after the death of his elder brother Manfred on 9 November 1317.

During his minority, his Greek possessions were governed by his illegitimate elder brother Alfonso Frederick, who in 1319 added the Duchy of Neopatria to the Catalan domains. In 1330, Alfonso returned from Greece and William ceded the counties of Malta and Gozo to him. Nicola Lanza replaced him in Greece.

In 1335, William married María Álvarez de Jérica, a descendant of Roger of Lauria, without papal dispensation, as both John XXII and Benedict XII wanted to check the power of Frederick his father. Two years later, his father willed him the Principality of Taranto, the county of Calatafimi, the honour of Monte Sant'Angelo, and various castles and lands in Noto, Spaccaforno, Capo Passero, and Avola when his mother, Eleanor, daughter of Charles II of Naples, died. She died in 1341, but William died first on 22 August 1338. He left his library to the Dominicans of Palermo and was buried in the cathedral there.

Ancestry

Notes

1. "Duchy of Athens". World History Encyclopedia. Retrieved 23 February 2021.
2. Fiske, p 837 n507.
3. Testamentum ducis Willelmi.

Sources

• Fiske, H. Acta Aragonensia. Berlin-Leipzig, 1908.
• Ghisalberti, Alberto M. Dizionario Biografico degli Italiani: III Ammirato – Arcoleo. Rome, 1961.

v t e Dukes of Athens
De la Roche dynasty (1205–1308)	Othon Guy I John I William I Helena Angelina Komnene (regent) Guy II
Brienne–Enghien dynasty (1308–1311/94)	Walter I Joanna of Châtillon Walter II Isabella Sohier Walter III Louis
Catalan Domination (1311–1388)	Roger Deslaur Manfred William II John II Frederick I Frederick II Maria Peter (IV) of Aragon
Acciaioli dynasty (1388–1395, 1402–1458)	Nerio I Antonio I Nerio II Antonio II Claire with Bartolomeo Contarini Francesco I Francesco II
from Walter I's death in 1311 titular, but recognized in Argos and Nauplia Also Dukes of Neopatras Venetian control in 1395–1402

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• 1312 births
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