Focus on this artwork and discuss the Identification.
Maike Vogt-Lüerssen argues that the famous painting actually depicts Bia's younger, legitimate half sister, Maria de' Medici. Vogt-Lüerssen noted in an article in Medicea – Rivista interdisciplinare di studi medicei that the subject of the portrait was identified as Maria until the 1950s and the pearls depicted in the portrait were a common symbol of the Medicis, often worn by legitimate female members of the house.  Vogt-Lüerssen believes that the child depicted in a famous portrait by Pontormo with Maria Salviati is actually Bia, her eldest granddaughter, because group portraits in that era depicted family members with close blood relationships and Salviati's two younger granddaughters, Maria and Isabella, were too young at Salviati's death to be the 5- or 6-year-old girl in the portrait.
Maria de' Medici Maria Maria Salviati pearl Pontormo Isabella Medici