Alessio Assonitis (Ph.D., Columbia University) is the director of The Medici Archive Project. He has published on topics related to Italian Renaissance art, book history, Medici history, archival studies and digital humanities.Henk Th. van Veen (Ph.D., University of Groningen) is a Professor Emeritus at the University of Groningen. He has published extensively on Italian early modern art, including the monograph Cosimo I De' Medici and His Self-Representation in Florentine Art and Culture (Cambridge University Press, 2006).

• List of FiguresAbbreviationsNotes on ContributorsIntroduction: Cosimo I de’ Medici (1519–2019)Alessio Assonitis and Henk Th. van Veen1 The Education of Cosimo di Giovanni de’ Medici (1519–1537)Alessio Assonitis2 Alessandro de’ Medici: A ReassessmentCatherine Fletcher3 Cosimo I and His Spanish In-Laws: The Duke and the Toledo FamilyFernando Loffredo4 The Emperor and the Duke: Cosimo I, Charles V, and the Negotiation of SovereigntyNicholas Scott Baker5 Cosimo I de’ Medici and Catherine de Médicis: Making the Political PersonalSheila ffolliott6 Cosimo I versus the Strozzi, the Enemies of the StateMarcello Simonetta7 His Father’s Son: Cosimo I de’ Medici as Military LeaderMaurizio Arfaioli8 Cosimo I “Fontana de Iustitia e Nemico de Tristi”: Pragmatism and AequitasDaniele Edigati9 Taking Over the Economy: Cosimo I de’ Medici and the Management of the Wealth of the StateStefano Calonaci10 Cosimo I de’ Medici and the Tuscan TerritoryOscar Schiavone11 Cosimo I and Religious Heterodoxy in TuscanyJessica Maratsos12 Cosimo I de’ Medici and the JewsPiergabriele Mancuso13 The Duke as Cultural Manager: Institutionalization and EntrepreneurshipAndrea M. Gáldy14 Problems with Cosimo I’s Artistic Patronage: Baccio Bandinelli and the Neptune Fountain in Piazza della SignoriaHenk Th. van Veen15 Cosimo I de’ Medici and the Renaissance Sciences: “To Measure and to See”Sheila Barker16 Cosimo I de’ Medici: Antagonism and PraiseCarmen Menchini17 Cosimo I de’ Medici and Modern HistoriographyBrendan DooleyIndex of Names

“This is a fine collection of studies and should be read not only by those interested in Cosimo I (and his successors), but also by others interested in questions of leadership, patronage, family history, and science.”Kathleen M. Comerford, Georgia Southern University. In: Renaissance Quarterly, Vol. 77, No. 2 (Summer 2023), pp. 688–690.