CORSINI, a Florentine princely family, of which the founder is said to be Neri Corsini, who flourished about the year 117o. The emperor Charles IV. created the head of the house a count palatine in 1371; in 173o Lorenzo Corsini was elected pope as Clement XII., and conferred the rank of Roman princes and the duchy of Casigliano on his family, and in 1732 they were created grandees of Spain.
See L. Passerini, Genealogia e storia della famiglia Corsini (Florence, 1858) ; A. von Reumont, Geschichte der Stadt Rom (1868) ; Almanach de Gotha.