Andrea de' Bardi
Andrea di Gualtieri de' Bardi (c. 1300–1368) was a Florentine merchant, knight and statesman of the Bardi banking family. He fought against John of Bohemia and the Scaligeri and held offices in Florentine service.
In 1332 he bought the county of Mangona, which Florence forced him to surrender in 1341 after the magnate conspiracy led by his brother Pietro failed. He helped Walter of Brienne seize power in 1342 and helped expel him in 1343, and later served as ambassador to Avignon.