 In 1658, Pietro Maria Lanza, XV Baron of Longi (son of Baldassarre II Lanza XIV Baron of Longi and Donna Paola Romeo), was the last male of the Lanza to own the Barony of Longi, in fact he did not want to respect the so-called "Agnatizia Successione "in favor of the second-born branch of his brother Giuseppe Lanza, Baron of Malaspina, to favor his only daughter, Flavia Lanza, who by marrying Gaspare di Napoli, in fact brought the first and historic barony of the Lanza of Sicily into the family of Naples.First and last example of Sicilian Succession (towards other families) in the main branch of the Lanza of Sicily.There were bitter struggles in the family (the brothers Pietro Maria and Giuseppe died), between the cousins Donna Flavia and don Filippo Lanza (and Filingeri), between 1658 and 1665.