Lamberto is a Florentine merchant who appears in Pampinea’s second tale (II, 3). He and his brothers Tebaldo and Agolante inherit their father’s huge fortune, spend it recklessly, become successful moneylenders in England, then spend their second fortune recklessly again. They’re rescued by the good fortune of their nephew, Alessandro. They thus illustrate the turns of fortune’s wheel, alternately elevated then humbled.