The Cellesi were a noble and ancient Pistoia family. Camillo Francesco Pistoia Cellesi obtained Florentine citizenship in 1642. Several family members were admitted to the nobility Pistoia in 1755; Francis and Joseph Cellesi were admitted to the Florentine nobility in 1807. The head of Santo Stefano starts from Knight Mariotto Cellesi, 1570. The members of the dynasty undertook significant business activities; among them should be mentioned Louis, Knight of Malta orders and Santo Stefano in 1779, Amerigo royal chamberlain of the Grand Duke Ferdinand in 1791 and Giovan Battista, Secretary of the Royal Grand Ducal law in government from 1792 to 1798. It became extinct in Marchetti Ducceschi in Giovan Battista in 1863.