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Nobile Graziano de Vassallo Was not her husband
http://fmg.ac/Projects/MedLands/SICILY.htm#PietroIIdied1342B%23ES
King Federigo & his wife had nine children:
7. GIOVANNI of Sicily (Apr/May 1317-Catania 3 Apr 1348). The Crónica de San Juan de la Peña names "el primero…Don Pedro…et el otro Don Johan…el tercero Guillem" as the three sons of Federigo King of Sicily, stating that Giovanni was "Duch de Atenas"[725]. Marchese di Randazzo. He succeeded his brother 1338 as Duke of Athens and Neopatras, although he never visited the territory. Regent of Sicily 1338-1348. He died of the plague. m CESARINA [Cesarea] Lancia, daughter of PIETRO Lancia Signor di Delia, Conte di Caltanissetta & his wife --- d'Alagón.
Giovanni & his wife had three children:
a) FEDERIGO de Aragón ([1340]-11 Jul 1355, bur Santa Agata Palermo). He succeeded his father in 1348 as Duke of Athens and Neopatras.
b) LEONOR de Aragón ([1346]-after 1369). m GUILLÉN de Peralta Conde de Castelbellotta.
c) CONSTANZA de Aragón
The following was sourced from the following website: Ancestors of John Cilia La Corte
1986816. Graziano de Vassallo,58 son of Vassallo de Vassallo and Eleonora de Antiochi, was born circa 1295.
1986817. Costanza d'Aragona,58 daughter of Juan de Aragón, Duke of Athens, Count of Malta and Cesarea Lanza.
I am presuming that Juan is the Spanish and Giovanni is the Italian version of the same name, just as Constance is the Anglised form of the Spanish Constanza. I haven't worked out what the 58 is after Graziano and Constanza's names. (Robyn Thorncraft)
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