When did Saint Olive die?

Answer 1

As per the Patron Saint Index and other sources, 'Saint' Olivia (Olive) never existed. She was the central character in a pious story circulating in the early Church that was mistaken to be a biography. Her feast day has been stricken from the Calendar of Saints.

Answer 2

St. Olive, Olivia de Palermo, was a fictional character who achieved a large following when her story was mistaken for a biography. She never existed.