"The sitter's young age, which appears to be between thirteen and sixteen, is the age Lavinia would have been in this period. A portrait of Lavinia della Rovere executed by Barocci is mentioned by Bellori (G. P. Bellori, Le Vite de' Pittori, Scultori ed Architetti moderni, Rome, 1672, p. 192) and Baldinucci (F. Baldinucci, Notizie de' Professori del Disegno, Florence, 1681-1728, p. 349) as well as in an epigram quoted by Bernardino Baldi (B. Baldi, Gli epigrammi inediti, gli apologhi e le egloghe, ed. by D. Ciampoli, Lanciano 1914, no. 371)." Dorotheum