This portrait is believed to be of Lisa Gherardini, the wife of Florentine fabric merchant Francesco del Giocondo. In Italian it is known as "La Gioconda", but in English it is commonly referred to as "The Mona Lisa."
Details
Title: Portrait of Lisa Gherardini, wife of Francesco del Giocondo, known as "Monna Lisa, la Gioconda" or "Mona Lisa", 1503-1519