Rosalia was born of a Norman noble family that claimed descent from Charlemagne. Devoutly religious, she retired to live as a hermit in a cave on Mount Pellegrino, where she died alone in 1166. Tradition says that she was led to the cave by two angels. On the cave wall she wrote "I, Rosalia, daughter of Sinibald, Lord of [Monte] delle Rose, and Quisquina, have taken the resolution to live in this cave for the love of my Lord, Jesus Christ