1911 Encyclopædia Britannica, Volume 21… (1911)
“ Peter III., king of Aragon (1236-1286) , son of James the Conqueror, and his wife Yolande, daughter of Andrew II. of Hungary, was born in 1236. Having married Constance, daughter of Manfred of Beneventum, he came forward as the representative of the claims of the Hohenstaufen in Naples and Sicily against Charles, duke of Anjou. Peter began the long strife of the Angevine and Aragonese parties in southern Italy. His success in conquering Sicily earned him the surname of “the Great.” ”
