Elvira, daughter of Alfonso VI and Isabella, married Roger II, then Count of Sicily, around 1117. From this marriage, five sons and one daughter were born: Roger (III), Tancred, Alfonso, William, Henry. The daughter’s name is unknown. Only William, born between 1120 and 1121, survived to become king of Sicily after his father, outliving his elder brothers. In his work De rebus gestis Rogerii Sicilie regis, the abbot Alexander of Telese recounts the great sorrow experienced by Roger II after the death of his beloved Elvira, who was buried in the St Mary Magdalene’s Chapel in Palermo Cathedral.