Saint Rosalia was a 12th-century hermit born into Norman nobility in Palermo. She chose a life of solitude, residing alone on Monte Pellegrino until her death in 1166. Recognized as a saint in the Catholic tradition, she is primarily remembered for her role as a divine intermediary during a plague that affected her home city. Today, she is celebrated as the patron saint of Palermo and holds similar patronage over several locations in Mexico and Venezuela.