Marie-Josephine Clarice Gaudette (known as Sister Cecilia) is an American-born Italian supercentenarian who was the oldest nun ever from 2016 to 2019. She was the fifth-oldest validated person in the world upon her death, as well as the second-oldest ever to die in Italy. Her age has been validated by the Gerontology Research Group (GRG) and recognized by LongeviQuest (LQ).