My translation of The Life of Castruccio Castracani is based on ‘La Vita di Castruccio Castracani da Lucca’, in Machiavelli, Il Principe e altre opere politiche (Milan: Garzanti, 1976, reprinted 2002). The translation of the sections of the Florentine Histories relevant to Castruccio is based on Le istorie fiorentine, ed. Giovanni Battista Niccolini, third edition (Florence: Le Monnier, 1990).